/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:21:40,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:21:40,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:21:40,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:21:40,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:21:40,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:21:40,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:21:40,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:21:40,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:21:40,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:21:40,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:21:40,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:21:40,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:21:40,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:21:40,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:21:40,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:21:40,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:21:40,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:21:40,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:21:40,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:21:40,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:21:40,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:21:40,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:21:40,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:21:40,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:21:40,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:21:40,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:21:40,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:21:40,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:21:40,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:21:40,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:21:40,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:21:40,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:21:40,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:21:40,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:21:40,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:21:40,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:21:40,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:21:40,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:21:40,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:21:40,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:21:40,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:21:40,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:21:40,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:21:40,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:21:40,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:21:40,420 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:21:40,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:21:40,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:21:40,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:21:40,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:21:40,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:21:40,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:21:40,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:21:40,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:21:40,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:21:40,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:21:40,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:21:40,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:21:40,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:21:40,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:21:40,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:21:40,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:21:40,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:21:40,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:21:40,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:21:40,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:21:40,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:21:40,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:21:40,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:21:40,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:21:40,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:21:40,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:21:40,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:21:40,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:21:40,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:21:40,810 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:21:40,811 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01.c [2020-10-14 21:21:40,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7851063e4/9481d2e56f3b430a939f331e1834edbf/FLAGdd82ad950 [2020-10-14 21:21:41,741 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:21:41,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label01.c [2020-10-14 21:21:41,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7851063e4/9481d2e56f3b430a939f331e1834edbf/FLAGdd82ad950 [2020-10-14 21:21:42,225 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7851063e4/9481d2e56f3b430a939f331e1834edbf [2020-10-14 21:21:42,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:21:42,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:21:42,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:21:42,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:21:42,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:21:42,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:21:42" (1/1) ... [2020-10-14 21:21:42,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217a2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:42, skipping insertion in model container [2020-10-14 21:21:42,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:21:42" (1/1) ... [2020-10-14 21:21:42,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:21:42,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:21:44,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:21:44,509 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:21:45,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:21:45,397 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:21:45,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45 WrapperNode [2020-10-14 21:21:45,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:21:45,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:21:45,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:21:45,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:21:45,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... [2020-10-14 21:21:45,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... [2020-10-14 21:21:45,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... [2020-10-14 21:21:45,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... [2020-10-14 21:21:45,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... [2020-10-14 21:21:45,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... [2020-10-14 21:21:45,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... [2020-10-14 21:21:45,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:21:45,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:21:45,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:21:45,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:21:45,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:21:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:21:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:21:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:21:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:21:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:21:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:21:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:21:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:21:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:21:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:21:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:21:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:21:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:21:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:21:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:21:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:21:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:21:56,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:21:56,977 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:21:56,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:56 BoogieIcfgContainer [2020-10-14 21:21:56,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:21:56,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:21:56,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:21:56,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:21:56,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:21:42" (1/3) ... [2020-10-14 21:21:56,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167a34e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:56, skipping insertion in model container [2020-10-14 21:21:57,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:45" (2/3) ... [2020-10-14 21:21:57,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167a34e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:57, skipping insertion in model container [2020-10-14 21:21:57,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:56" (3/3) ... [2020-10-14 21:21:57,002 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label01.c [2020-10-14 21:21:57,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:21:57,024 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:21:57,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:21:57,071 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:21:57,072 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:21:57,072 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:21:57,072 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:21:57,072 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:21:57,072 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:21:57,072 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:21:57,072 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:21:57,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:21:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 21:21:57,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:57,124 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] [2020-10-14 21:21:57,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1163997272, now seen corresponding path program 1 times [2020-10-14 21:21:57,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:57,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288332267] [2020-10-14 21:21:57,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:57,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:57,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:57,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 21:21:57,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:57,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-14 21:21:57,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:57,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:21:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:21:57,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 21:21:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:21:58,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:58,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:58,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:21:58,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:58,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:21:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:21:58,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288332267] [2020-10-14 21:21:58,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:21:58,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:21:58,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834959248] [2020-10-14 21:21:58,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:21:58,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:58,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:21:58,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:21:58,160 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:22:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:13,350 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 21:22:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:22:13,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-14 21:22:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:13,390 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 21:22:13,391 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 21:22:13,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:22:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 21:22:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 21:22:13,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 21:22:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 21:22:13,711 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 55 [2020-10-14 21:22:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:13,714 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 21:22:13,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:22:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 21:22:13,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 21:22:13,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:13,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:22:13,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:22:13,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:13,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:13,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1488711360, now seen corresponding path program 1 times [2020-10-14 21:22:13,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:13,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209425213] [2020-10-14 21:22:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:14,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:14,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 21:22:14,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:22:14,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-10-14 21:22:14,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:14,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:14,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:22:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:22:14,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:14,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:14,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:14,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:14,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:22:14,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:14,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:14,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:14,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:22:14,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:15,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:15,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:22:15,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 21:22:15,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:15,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:15,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:15,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:22:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:22:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:22:15,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209425213] [2020-10-14 21:22:15,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:15,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:22:15,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563282401] [2020-10-14 21:22:15,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:15,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:15,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:15,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:15,335 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-14 21:22:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:22:36,374 INFO L93 Difference]: Finished difference Result 5664 states and 9315 transitions. [2020-10-14 21:22:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:22:36,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-14 21:22:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:22:36,403 INFO L225 Difference]: With dead ends: 5664 [2020-10-14 21:22:36,403 INFO L226 Difference]: Without dead ends: 3785 [2020-10-14 21:22:36,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:22:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2020-10-14 21:22:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3706. [2020-10-14 21:22:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3706 states. [2020-10-14 21:22:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 5583 transitions. [2020-10-14 21:22:36,524 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 5583 transitions. Word has length 125 [2020-10-14 21:22:36,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:22:36,524 INFO L479 AbstractCegarLoop]: Abstraction has 3706 states and 5583 transitions. [2020-10-14 21:22:36,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:22:36,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 5583 transitions. [2020-10-14 21:22:36,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 21:22:36,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:22:36,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:22:36,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:22:36,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:22:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:22:36,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2027292131, now seen corresponding path program 1 times [2020-10-14 21:22:36,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:22:36,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738730427] [2020-10-14 21:22:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:22:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:36,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:39,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:39,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:22:39,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:22:39,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2688 [2020-10-14 21:22:39,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:39,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:22:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:22:39,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:22:39,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:39,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:39,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:39,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:39,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:22:39,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:39,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:22:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:39,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:39,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:39,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:39,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:22:39,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:39,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 21:22:39,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:39,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:39,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:22:39,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:22:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:22:39,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738730427] [2020-10-14 21:22:39,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:22:39,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:22:39,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438818879] [2020-10-14 21:22:39,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:39,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:39,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:39,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:39,817 INFO L87 Difference]: Start difference. First operand 3706 states and 5583 transitions. Second operand 7 states. [2020-10-14 21:23:01,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:01,550 INFO L93 Difference]: Finished difference Result 8463 states and 13162 transitions. [2020-10-14 21:23:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:23:01,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-14 21:23:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:01,584 INFO L225 Difference]: With dead ends: 8463 [2020-10-14 21:23:01,584 INFO L226 Difference]: Without dead ends: 4763 [2020-10-14 21:23:01,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:23:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4763 states. [2020-10-14 21:23:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4763 to 4587. [2020-10-14 21:23:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4587 states. [2020-10-14 21:23:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 6242 transitions. [2020-10-14 21:23:01,765 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 6242 transitions. Word has length 130 [2020-10-14 21:23:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:01,768 INFO L479 AbstractCegarLoop]: Abstraction has 4587 states and 6242 transitions. [2020-10-14 21:23:01,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 6242 transitions. [2020-10-14 21:23:01,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-14 21:23:01,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:01,776 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:23:01,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:23:01,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:01,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:01,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1202378515, now seen corresponding path program 1 times [2020-10-14 21:23:01,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:01,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780687327] [2020-10-14 21:23:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:01,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:03,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:03,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 21:23:03,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:23:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1216 [2020-10-14 21:23:03,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:03,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:03,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:23:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:23:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:23:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:03,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:03,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:03,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:03,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:03,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:23:03,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:03,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:03,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:23:03,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:03,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:03,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:03,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:23:03,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:03,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 21:23:03,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:03,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:23:03,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:23:03,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:03,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780687327] [2020-10-14 21:23:03,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:23:03,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:23:03,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464203358] [2020-10-14 21:23:03,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:23:03,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:03,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:23:03,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:23:03,759 INFO L87 Difference]: Start difference. First operand 4587 states and 6242 transitions. Second operand 7 states. [2020-10-14 21:23:28,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:23:28,940 INFO L93 Difference]: Finished difference Result 9466 states and 12837 transitions. [2020-10-14 21:23:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:23:28,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-14 21:23:28,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:23:28,974 INFO L225 Difference]: With dead ends: 9466 [2020-10-14 21:23:28,974 INFO L226 Difference]: Without dead ends: 4885 [2020-10-14 21:23:28,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:23:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2020-10-14 21:23:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 4613. [2020-10-14 21:23:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2020-10-14 21:23:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 6236 transitions. [2020-10-14 21:23:29,122 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 6236 transitions. Word has length 170 [2020-10-14 21:23:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:23:29,124 INFO L479 AbstractCegarLoop]: Abstraction has 4613 states and 6236 transitions. [2020-10-14 21:23:29,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:23:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 6236 transitions. [2020-10-14 21:23:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 21:23:29,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:23:29,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:23:29,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:23:29,137 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:23:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:23:29,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1077990064, now seen corresponding path program 1 times [2020-10-14 21:23:29,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:23:29,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113817739] [2020-10-14 21:23:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:23:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:29,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:29,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 21:23:29,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 21:23:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:29,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:23:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:23:29,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 21:23:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:23:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:23:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:29,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:29,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:23:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:23:29,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:29,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:23:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:23:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:23:29,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:23:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:23:29,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:23:29,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:23:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:23:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:23:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 21:23:29,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:23:29,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:23:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:23:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:23:30,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:23:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:23:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:23:30,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113817739] [2020-10-14 21:23:30,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:23:30,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:23:30,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70755938] [2020-10-14 21:23:30,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:23:30,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:23:30,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:23:30,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:23:30,164 INFO L87 Difference]: Start difference. First operand 4613 states and 6236 transitions. Second operand 5 states. [2020-10-14 21:24:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:00,701 INFO L93 Difference]: Finished difference Result 11034 states and 15805 transitions. [2020-10-14 21:24:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:24:00,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 21:24:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:00,747 INFO L225 Difference]: With dead ends: 11034 [2020-10-14 21:24:00,748 INFO L226 Difference]: Without dead ends: 7230 [2020-10-14 21:24:00,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:24:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7230 states. [2020-10-14 21:24:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7230 to 7105. [2020-10-14 21:24:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7105 states. [2020-10-14 21:24:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 9473 transitions. [2020-10-14 21:24:00,960 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 9473 transitions. Word has length 184 [2020-10-14 21:24:00,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:00,961 INFO L479 AbstractCegarLoop]: Abstraction has 7105 states and 9473 transitions. [2020-10-14 21:24:00,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:24:00,961 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 9473 transitions. [2020-10-14 21:24:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-14 21:24:00,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:00,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:24:00,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:24:00,969 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2067637629, now seen corresponding path program 1 times [2020-10-14 21:24:00,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:00,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33621708] [2020-10-14 21:24:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:01,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:03,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:04,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:04,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 21:24:04,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:24:04,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3521 [2020-10-14 21:24:04,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:04,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:04,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:24:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:24:04,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-14 21:24:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:04,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:04,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:04,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:04,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:04,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:04,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:24:04,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:04,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:04,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:04,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:24:04,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:05,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:05,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:24:05,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-14 21:24:05,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:05,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:05,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:24:05,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:24:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:05,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:05,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:05,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 21:24:05,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:05,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 21:24:05,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:05,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:05,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:24:05,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:24:05,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33621708] [2020-10-14 21:24:05,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:05,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:24:05,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734929974] [2020-10-14 21:24:05,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:05,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:05,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:05,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:05,729 INFO L87 Difference]: Start difference. First operand 7105 states and 9473 transitions. Second operand 7 states. [2020-10-14 21:24:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:24:41,818 INFO L93 Difference]: Finished difference Result 18242 states and 25835 transitions. [2020-10-14 21:24:41,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:24:41,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-14 21:24:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:24:41,881 INFO L225 Difference]: With dead ends: 18242 [2020-10-14 21:24:41,881 INFO L226 Difference]: Without dead ends: 11946 [2020-10-14 21:24:41,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:24:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11946 states. [2020-10-14 21:24:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11946 to 11571. [2020-10-14 21:24:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11571 states. [2020-10-14 21:24:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 14938 transitions. [2020-10-14 21:24:42,237 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 14938 transitions. Word has length 255 [2020-10-14 21:24:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:24:42,238 INFO L479 AbstractCegarLoop]: Abstraction has 11571 states and 14938 transitions. [2020-10-14 21:24:42,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:24:42,238 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 14938 transitions. [2020-10-14 21:24:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 21:24:42,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:24:42,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:24:42,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:24:42,246 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:24:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:24:42,246 INFO L82 PathProgramCache]: Analyzing trace with hash -790564800, now seen corresponding path program 1 times [2020-10-14 21:24:42,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:24:42,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201340203] [2020-10-14 21:24:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:24:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:42,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:43,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 21:24:43,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:24:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1278 [2020-10-14 21:24:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:43,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:24:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:24:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:43,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:24:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:43,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:43,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:43,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:24:43,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:24:43,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:43,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:43,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:24:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:24:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:43,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:24:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:43,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:43,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:24:43,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 21:24:43,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:43,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:24:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:24:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:24:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:24:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:24:44,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:24:44,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:24:44,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:24:44,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:24:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 21:24:44,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:24:44,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:24:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:24:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:24:44,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:24:44,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:24:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:24:44,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201340203] [2020-10-14 21:24:44,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:24:44,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:24:44,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209984366] [2020-10-14 21:24:44,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:24:44,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:24:44,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:24:44,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:24:44,678 INFO L87 Difference]: Start difference. First operand 11571 states and 14938 transitions. Second operand 7 states. [2020-10-14 21:25:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:25:22,368 INFO L93 Difference]: Finished difference Result 29216 states and 39889 transitions. [2020-10-14 21:25:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:25:22,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-14 21:25:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:25:22,455 INFO L225 Difference]: With dead ends: 29216 [2020-10-14 21:25:22,455 INFO L226 Difference]: Without dead ends: 18454 [2020-10-14 21:25:22,488 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:25:22,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2020-10-14 21:25:22,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 17829. [2020-10-14 21:25:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17829 states. [2020-10-14 21:25:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17829 states to 17829 states and 22870 transitions. [2020-10-14 21:25:23,011 INFO L78 Accepts]: Start accepts. Automaton has 17829 states and 22870 transitions. Word has length 260 [2020-10-14 21:25:23,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:25:23,012 INFO L479 AbstractCegarLoop]: Abstraction has 17829 states and 22870 transitions. [2020-10-14 21:25:23,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:25:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 17829 states and 22870 transitions. [2020-10-14 21:25:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 21:25:23,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:25:23,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:25:23,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:25:23,018 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:25:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:25:23,019 INFO L82 PathProgramCache]: Analyzing trace with hash -171100268, now seen corresponding path program 1 times [2020-10-14 21:25:23,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:25:23,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826151591] [2020-10-14 21:25:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:25:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:24,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 21:25:24,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:25:24,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1032 [2020-10-14 21:25:24,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:24,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:24,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:25:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:25:24,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 21:25:24,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:25:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:24,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:24,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:25:24,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:25:24,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:24,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:25:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:25:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:25:24,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:25:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:24,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:24,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:25:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:25:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:24,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:25:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:25:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:25:24,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:25:24,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:25:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:25:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:25:24,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:25:24,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:25:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:25:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 21:25:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:25:24,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:25:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:25:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:25:24,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:25:24,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:25:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:25:24,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826151591] [2020-10-14 21:25:24,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:25:24,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:25:24,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561268893] [2020-10-14 21:25:24,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:25:24,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:25:24,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:25:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:25:24,869 INFO L87 Difference]: Start difference. First operand 17829 states and 22870 transitions. Second operand 7 states.