/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:36:56,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:36:56,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:36:56,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:36:56,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:36:56,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:36:56,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:36:56,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:36:56,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:36:56,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:36:56,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:36:56,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:36:56,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:36:56,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:36:56,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:36:56,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:36:56,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:36:56,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:36:56,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:36:56,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:36:56,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:36:56,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:36:56,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:36:56,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:36:56,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:36:56,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:36:56,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:36:56,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:36:56,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:36:56,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:36:56,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:36:56,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:36:56,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:36:56,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:36:56,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:36:56,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:36:56,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:36:56,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:36:56,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:36:56,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:36:56,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:36:56,308 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 21:36:56,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:36:56,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:36:56,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:36:56,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:36:56,360 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:36:56,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:36:56,361 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:36:56,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:36:56,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:36:56,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:36:56,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:36:56,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:36:56,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:36:56,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:36:56,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:36:56,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:36:56,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:36:56,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:36:56,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:36:56,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:36:56,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:36:56,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:36:56,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:36:56,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:36:56,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:36:56,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:36:56,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:36:56,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:36:56,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:36:56,368 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 21:36:56,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:36:56,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:36:56,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:36:56,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:36:56,701 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:36:56,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label54.c [2020-10-14 21:36:56,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e460e492/8843a342e2654416a37253bb5b229e30/FLAGafa91a0f6 [2020-10-14 21:36:57,901 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:36:57,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label54.c [2020-10-14 21:36:57,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e460e492/8843a342e2654416a37253bb5b229e30/FLAGafa91a0f6 [2020-10-14 21:36:58,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e460e492/8843a342e2654416a37253bb5b229e30 [2020-10-14 21:36:58,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:36:58,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:36:58,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:36:58,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:36:58,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:36:58,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:36:58" (1/1) ... [2020-10-14 21:36:58,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:36:58, skipping insertion in model container [2020-10-14 21:36:58,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:36:58" (1/1) ... [2020-10-14 21:36:58,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:36:58,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:37:00,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:00,228 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:37:01,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:37:01,093 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:37:01,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01 WrapperNode [2020-10-14 21:37:01,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:37:01,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:37:01,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:37:01,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:37:01,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (1/1) ... [2020-10-14 21:37:01,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (1/1) ... [2020-10-14 21:37:01,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (1/1) ... [2020-10-14 21:37:01,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (1/1) ... [2020-10-14 21:37:01,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (1/1) ... [2020-10-14 21:37:01,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (1/1) ... [2020-10-14 21:37:01,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (1/1) ... [2020-10-14 21:37:01,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:37:01,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:37:01,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:37:01,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:37:01,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (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 21:37:01,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:37:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:37:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:37:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:37:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:37:01,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:37:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:37:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:37:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:37:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:37:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:37:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:37:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:37:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:37:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:37:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:37:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:37:13,349 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:37:13,350 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:37:13,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:13 BoogieIcfgContainer [2020-10-14 21:37:13,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:37:13,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:37:13,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:37:13,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:37:13,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:36:58" (1/3) ... [2020-10-14 21:37:13,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b95bbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:13, skipping insertion in model container [2020-10-14 21:37:13,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:37:01" (2/3) ... [2020-10-14 21:37:13,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b95bbc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:37:13, skipping insertion in model container [2020-10-14 21:37:13,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:37:13" (3/3) ... [2020-10-14 21:37:13,390 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label54.c [2020-10-14 21:37:13,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:37:13,422 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:37:13,440 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:37:13,484 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:37:13,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:37:13,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:37:13,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:37:13,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:37:13,485 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:37:13,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:37:13,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:37:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:37:13,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 21:37:13,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:37:13,547 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] [2020-10-14 21:37:13,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:37:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:37:13,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1861016480, now seen corresponding path program 1 times [2020-10-14 21:37:13,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:37:13,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322308019] [2020-10-14 21:37:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:37:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:13,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:14,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:14,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 21:37:14,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:14,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 21:37:14,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:14,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:37:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:37:14,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 21:37:14,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:37:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:37:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:14,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:14,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:37:14,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 21:37:14,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:14,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:37:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:37:14,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:37:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:37:14,451 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 21:37:14,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322308019] [2020-10-14 21:37:14,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:37:14,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:37:14,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098843092] [2020-10-14 21:37:14,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:37:14,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:37:14,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:37:14,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:37:14,485 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:37:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:37:29,312 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 21:37:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:37:29,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 21:37:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:37:29,354 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 21:37:29,355 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 21:37:29,369 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 21:37:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 21:37:29,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 21:37:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 21:37:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 21:37:29,575 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 33 [2020-10-14 21:37:29,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:37:29,576 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 21:37:29,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:37:29,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 21:37:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 21:37:29,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:37:29,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:29,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:37:29,587 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:37:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:37:29,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1728074920, now seen corresponding path program 1 times [2020-10-14 21:37:29,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:37:29,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709171086] [2020-10-14 21:37:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:37:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:30,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:30,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:30,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 21:37:30,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:37:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-14 21:37:30,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:30,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:37:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:37:30,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:37:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:37:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:37:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:31,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:31,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:31,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:37:31,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:37:31,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:31,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:31,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:37:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:37:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:37:31,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:37:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:37:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:37:31,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:37:31,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:37:31,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:37:31,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:37:31,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 21:37:31,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:37:31,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:37:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:37:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:37:31,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:37:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:37:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:37:31,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709171086] [2020-10-14 21:37:31,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:37:31,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:37:31,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300345173] [2020-10-14 21:37:31,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:37:31,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:37:31,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:37:31,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:37:31,541 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 8 states. [2020-10-14 21:38:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:06,807 INFO L93 Difference]: Finished difference Result 7269 states and 12083 transitions. [2020-10-14 21:38:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:38:06,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-14 21:38:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:06,848 INFO L225 Difference]: With dead ends: 7269 [2020-10-14 21:38:06,849 INFO L226 Difference]: Without dead ends: 5390 [2020-10-14 21:38:06,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:38:06,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2020-10-14 21:38:07,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5320. [2020-10-14 21:38:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-14 21:38:07,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 7792 transitions. [2020-10-14 21:38:07,079 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 7792 transitions. Word has length 103 [2020-10-14 21:38:07,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:07,081 INFO L479 AbstractCegarLoop]: Abstraction has 5320 states and 7792 transitions. [2020-10-14 21:38:07,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:38:07,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 7792 transitions. [2020-10-14 21:38:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 21:38:07,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:07,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:07,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:38:07,097 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:07,097 INFO L82 PathProgramCache]: Analyzing trace with hash -881411451, now seen corresponding path program 1 times [2020-10-14 21:38:07,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:07,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988696744] [2020-10-14 21:38:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:08,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:08,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:38:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 991 [2020-10-14 21:38:08,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:08,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:08,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:38:08,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:08,329 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 21:38:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:08,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:08,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:08,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:38:08,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:08,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:08,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:08,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:08,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:38:08,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:08,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 21:38:08,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:08,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:08,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:08,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:38:08,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:08,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988696744] [2020-10-14 21:38:08,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:08,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:08,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157918877] [2020-10-14 21:38:08,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:08,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:08,918 INFO L87 Difference]: Start difference. First operand 5320 states and 7792 transitions. Second operand 7 states. [2020-10-14 21:38:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:36,346 INFO L93 Difference]: Finished difference Result 11723 states and 17914 transitions. [2020-10-14 21:38:36,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:38:36,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-14 21:38:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:36,385 INFO L225 Difference]: With dead ends: 11723 [2020-10-14 21:38:36,385 INFO L226 Difference]: Without dead ends: 6409 [2020-10-14 21:38:36,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:38:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6409 states. [2020-10-14 21:38:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6409 to 6185. [2020-10-14 21:38:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6185 states. [2020-10-14 21:38:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6185 states to 6185 states and 8345 transitions. [2020-10-14 21:38:36,599 INFO L78 Accepts]: Start accepts. Automaton has 6185 states and 8345 transitions. Word has length 108 [2020-10-14 21:38:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:36,600 INFO L479 AbstractCegarLoop]: Abstraction has 6185 states and 8345 transitions. [2020-10-14 21:38:36,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 6185 states and 8345 transitions. [2020-10-14 21:38:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 21:38:36,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:36,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:36,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:38:36,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1831221931, now seen corresponding path program 1 times [2020-10-14 21:38:36,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:36,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7004391] [2020-10-14 21:38:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:37,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:37,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:37,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 21:38:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:38:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-14 21:38:37,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:37,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:38:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:38:37,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:38:37,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:37,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:38:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:37,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:37,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:38:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:38:37,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:37,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:38:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:38:37,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:38:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:38:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:38,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:38:38,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:38:38,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:38:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-14 21:38:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:38:38,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:38:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:38:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:38:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:38:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:38:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:38:38,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7004391] [2020-10-14 21:38:38,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:38:38,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:38:38,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478118231] [2020-10-14 21:38:38,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:38:38,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:38:38,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:38:38,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:38:38,462 INFO L87 Difference]: Start difference. First operand 6185 states and 8345 transitions. Second operand 7 states. [2020-10-14 21:38:59,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:38:59,243 INFO L93 Difference]: Finished difference Result 12847 states and 17618 transitions. [2020-10-14 21:38:59,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:38:59,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 148 [2020-10-14 21:38:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:38:59,276 INFO L225 Difference]: With dead ends: 12847 [2020-10-14 21:38:59,276 INFO L226 Difference]: Without dead ends: 6668 [2020-10-14 21:38:59,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:38:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6668 states. [2020-10-14 21:38:59,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6668 to 6195. [2020-10-14 21:38:59,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6195 states. [2020-10-14 21:38:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6195 states to 6195 states and 8321 transitions. [2020-10-14 21:38:59,448 INFO L78 Accepts]: Start accepts. Automaton has 6195 states and 8321 transitions. Word has length 148 [2020-10-14 21:38:59,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:38:59,450 INFO L479 AbstractCegarLoop]: Abstraction has 6195 states and 8321 transitions. [2020-10-14 21:38:59,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:38:59,450 INFO L276 IsEmpty]: Start isEmpty. Operand 6195 states and 8321 transitions. [2020-10-14 21:38:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 21:38:59,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:38:59,456 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:59,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:38:59,456 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:38:59,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:38:59,457 INFO L82 PathProgramCache]: Analyzing trace with hash 53222904, now seen corresponding path program 1 times [2020-10-14 21:38:59,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:38:59,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160173094] [2020-10-14 21:38:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:38:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:38:59,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:38:59,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:39:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-10-14 21:39:00,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:39:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 21:39:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:00,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:39:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:39:00,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:00,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:00,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:00,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:39:00,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:00,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 21:39:00,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:00,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:00,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:39:00,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:39:01,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160173094] [2020-10-14 21:39:01,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:01,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:39:01,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888951477] [2020-10-14 21:39:01,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:39:01,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:01,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:39:01,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:39:01,081 INFO L87 Difference]: Start difference. First operand 6195 states and 8321 transitions. Second operand 6 states. [2020-10-14 21:39:21,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:21,350 INFO L93 Difference]: Finished difference Result 15003 states and 21236 transitions. [2020-10-14 21:39:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:39:21,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-10-14 21:39:21,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:21,386 INFO L225 Difference]: With dead ends: 15003 [2020-10-14 21:39:21,386 INFO L226 Difference]: Without dead ends: 9617 [2020-10-14 21:39:21,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9617 states. [2020-10-14 21:39:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9617 to 9578. [2020-10-14 21:39:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9578 states. [2020-10-14 21:39:21,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 12328 transitions. [2020-10-14 21:39:21,583 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 12328 transitions. Word has length 162 [2020-10-14 21:39:21,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:21,584 INFO L479 AbstractCegarLoop]: Abstraction has 9578 states and 12328 transitions. [2020-10-14 21:39:21,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:39:21,584 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 12328 transitions. [2020-10-14 21:39:21,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-14 21:39:21,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:21,590 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:39:21,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:39:21,591 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:21,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1114171885, now seen corresponding path program 1 times [2020-10-14 21:39:21,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:21,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817564970] [2020-10-14 21:39:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:21,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:23,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 21:39:23,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:39:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2207 [2020-10-14 21:39:23,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:23,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:39:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:39:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 21:39:23,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:23,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:23,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:23,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:23,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:23,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:23,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:39:23,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:23,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:23,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:23,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:39:23,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:39:24,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 21:39:24,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:24,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:39:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:39:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:24,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:24,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:39:24,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:24,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 21:39:24,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:24,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:24,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:24,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:39:24,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 122 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:39:24,658 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817564970] [2020-10-14 21:39:24,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:24,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:24,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350044592] [2020-10-14 21:39:24,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:24,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:24,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:24,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:24,662 INFO L87 Difference]: Start difference. First operand 9578 states and 12328 transitions. Second operand 7 states. [2020-10-14 21:39:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:39:49,790 INFO L93 Difference]: Finished difference Result 26379 states and 35846 transitions. [2020-10-14 21:39:49,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:39:49,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-14 21:39:49,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:39:49,859 INFO L225 Difference]: With dead ends: 26379 [2020-10-14 21:39:49,860 INFO L226 Difference]: Without dead ends: 17610 [2020-10-14 21:39:49,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:39:49,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17610 states. [2020-10-14 21:39:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17610 to 17423. [2020-10-14 21:39:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17423 states. [2020-10-14 21:39:50,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17423 states to 17423 states and 21945 transitions. [2020-10-14 21:39:50,253 INFO L78 Accepts]: Start accepts. Automaton has 17423 states and 21945 transitions. Word has length 238 [2020-10-14 21:39:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:39:50,254 INFO L479 AbstractCegarLoop]: Abstraction has 17423 states and 21945 transitions. [2020-10-14 21:39:50,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:39:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 17423 states and 21945 transitions. [2020-10-14 21:39:50,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 21:39:50,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:39:50,260 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, 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, 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] [2020-10-14 21:39:50,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:39:50,261 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:39:50,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:39:50,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1948351668, now seen corresponding path program 1 times [2020-10-14 21:39:50,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:39:50,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399716379] [2020-10-14 21:39:50,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:39:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:50,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:52,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:52,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 21:39:52,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:39:52,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-14 21:39:52,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:52,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:52,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:52,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:39:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:39:52,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:52,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:39:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:52,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:52,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:39:52,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:52,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:39:52,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:52,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:39:52,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:52,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:39:52,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:52,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:39:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:52,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:52,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:39:52,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:52,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 21:39:52,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:52,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:39:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:39:52,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:39:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:52,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:39:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:39:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:39:52,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:39:52,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:39:52,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:39:52,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-14 21:39:52,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:39:52,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:39:52,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:39:52,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:39:52,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:39:52,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:39:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:39:52,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399716379] [2020-10-14 21:39:52,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:39:52,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:39:52,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939531054] [2020-10-14 21:39:52,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:39:52,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:39:52,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:39:52,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:39:52,978 INFO L87 Difference]: Start difference. First operand 17423 states and 21945 transitions. Second operand 7 states. [2020-10-14 21:40:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:40:20,046 INFO L93 Difference]: Finished difference Result 42695 states and 57095 transitions. [2020-10-14 21:40:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:40:20,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-14 21:40:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:40:20,154 INFO L225 Difference]: With dead ends: 42695 [2020-10-14 21:40:20,155 INFO L226 Difference]: Without dead ends: 26081 [2020-10-14 21:40:20,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:40:20,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2020-10-14 21:40:20,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 24741. [2020-10-14 21:40:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24741 states. [2020-10-14 21:40:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24741 states to 24741 states and 31968 transitions. [2020-10-14 21:40:20,792 INFO L78 Accepts]: Start accepts. Automaton has 24741 states and 31968 transitions. Word has length 240 [2020-10-14 21:40:20,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:40:20,793 INFO L479 AbstractCegarLoop]: Abstraction has 24741 states and 31968 transitions. [2020-10-14 21:40:20,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:40:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 24741 states and 31968 transitions. [2020-10-14 21:40:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-14 21:40:20,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:40:20,799 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, 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, 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] [2020-10-14 21:40:20,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:40:20,800 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:40:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:40:20,800 INFO L82 PathProgramCache]: Analyzing trace with hash 267527701, now seen corresponding path program 1 times [2020-10-14 21:40:20,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:40:20,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635305356] [2020-10-14 21:40:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:40:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:20,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:21,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:21,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:22,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:22,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 21:40:22,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:40:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-10-14 21:40:22,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:22,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:40:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:40:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:40:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:22,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:22,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:40:22,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:22,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:40:22,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:22,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:40:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:22,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:40:22,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:40:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:40:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:22,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:22,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:22,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:40:22,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 21:40:22,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:22,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:40:22,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:40:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:40:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:40:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:40:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:40:22,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:40:22,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:40:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:40:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 21:40:22,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:40:22,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:40:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:40:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:40:22,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:40:22,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:40:23,064 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 144 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:40:23,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635305356] [2020-10-14 21:40:23,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:40:23,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:40:23,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179255501] [2020-10-14 21:40:23,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:40:23,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:40:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:40:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:40:23,067 INFO L87 Difference]: Start difference. First operand 24741 states and 31968 transitions. Second operand 7 states. [2020-10-14 21:41:03,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:41:03,535 INFO L93 Difference]: Finished difference Result 57403 states and 78950 transitions. [2020-10-14 21:41:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:41:03,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-14 21:41:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:41:03,651 INFO L225 Difference]: With dead ends: 57403 [2020-10-14 21:41:03,651 INFO L226 Difference]: Without dead ends: 40846 [2020-10-14 21:41:03,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:41:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40846 states. [2020-10-14 21:41:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40846 to 33692. [2020-10-14 21:41:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33692 states. [2020-10-14 21:41:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33692 states to 33692 states and 42949 transitions. [2020-10-14 21:41:04,439 INFO L78 Accepts]: Start accepts. Automaton has 33692 states and 42949 transitions. Word has length 257 [2020-10-14 21:41:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:41:04,440 INFO L479 AbstractCegarLoop]: Abstraction has 33692 states and 42949 transitions. [2020-10-14 21:41:04,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:41:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 33692 states and 42949 transitions.