/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_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:25:48,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:25:48,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:25:48,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:25:48,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:25:48,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:25:48,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:25:48,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:25:48,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:25:48,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:25:48,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:25:48,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:25:48,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:25:48,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:25:48,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:25:48,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:25:48,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:25:48,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:25:48,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:25:48,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:25:48,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:25:48,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:25:48,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:25:48,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:25:48,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:25:48,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:25:48,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:25:48,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:25:48,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:25:48,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:25:48,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:25:48,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:25:48,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:25:48,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:25:48,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:25:48,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:25:48,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:25:48,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:25:48,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:25:48,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:25:48,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:25:48,191 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 21:25:48,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:25:48,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:25:48,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:25:48,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:25:48,218 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:25:48,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:25:48,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:25:48,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:25:48,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:25:48,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:25:48,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:25:48,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:25:48,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:25:48,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:25:48,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:25:48,220 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:25:48,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:25:48,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:25:48,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:25:48,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:25:48,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:25:48,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:25:48,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:25:48,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:25:48,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:25:48,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:25:48,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:25:48,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:25:48,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:25:48,223 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 21:25:48,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:25:48,658 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:25:48,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:25:48,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:25:48,665 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:25:48,666 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15.c [2020-10-14 21:25:48,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f20d23f4/5517b396047044ce9bbdece4bb836573/FLAGeda89f4b4 [2020-10-14 21:25:49,699 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:25:49,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label15.c [2020-10-14 21:25:49,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f20d23f4/5517b396047044ce9bbdece4bb836573/FLAGeda89f4b4 [2020-10-14 21:25:50,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f20d23f4/5517b396047044ce9bbdece4bb836573 [2020-10-14 21:25:50,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:25:50,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:25:50,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:25:50,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:25:50,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:25:50,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:50" (1/1) ... [2020-10-14 21:25:50,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ab4c8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:50, skipping insertion in model container [2020-10-14 21:25:50,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:25:50" (1/1) ... [2020-10-14 21:25:50,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:25:50,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:25:52,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:25:52,720 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:25:53,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:25:53,491 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:25:53,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53 WrapperNode [2020-10-14 21:25:53,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:25:53,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:25:53,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:25:53,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:25:53,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... [2020-10-14 21:25:53,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... [2020-10-14 21:25:53,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... [2020-10-14 21:25:53,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... [2020-10-14 21:25:53,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... [2020-10-14 21:25:53,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... [2020-10-14 21:25:53,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... [2020-10-14 21:25:53,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:25:53,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:25:53,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:25:53,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:25:53,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:25:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:25:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:25:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:25:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:25:53,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:25:53,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:25:53,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:25:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:25:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:25:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:25:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:25:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:25:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:25:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:26:05,488 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:26:05,489 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:26:05,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:05 BoogieIcfgContainer [2020-10-14 21:26:05,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:26:05,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:26:05,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:26:05,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:26:05,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:25:50" (1/3) ... [2020-10-14 21:26:05,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d35fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:05, skipping insertion in model container [2020-10-14 21:26:05,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:25:53" (2/3) ... [2020-10-14 21:26:05,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d35fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:05, skipping insertion in model container [2020-10-14 21:26:05,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:05" (3/3) ... [2020-10-14 21:26:05,521 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label15.c [2020-10-14 21:26:05,534 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:26:05,546 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:26:05,564 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:26:05,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:26:05,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:26:05,600 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:26:05,600 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:26:05,600 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:26:05,600 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:26:05,600 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:26:05,600 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:26:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:26:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 21:26:05,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:05,656 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] [2020-10-14 21:26:05,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:05,664 INFO L82 PathProgramCache]: Analyzing trace with hash -91190537, now seen corresponding path program 1 times [2020-10-14 21:26:05,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:05,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617924399] [2020-10-14 21:26:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:06,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:06,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 21:26:06,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:06,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 21:26:06,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:06,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:06,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 21:26:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:26:06,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:06,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:06,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:06,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:26:06,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:06,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:06,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:06,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:06,516 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 21:26:06,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617924399] [2020-10-14 21:26:06,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:06,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:26:06,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509145443] [2020-10-14 21:26:06,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:26:06,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:06,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:26:06,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:26:06,553 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:26:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:20,413 INFO L93 Difference]: Finished difference Result 3107 states and 5729 transitions. [2020-10-14 21:26:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:26:20,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 21:26:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:20,458 INFO L225 Difference]: With dead ends: 3107 [2020-10-14 21:26:20,459 INFO L226 Difference]: Without dead ends: 1903 [2020-10-14 21:26:20,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 21:26:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-10-14 21:26:20,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1883. [2020-10-14 21:26:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2020-10-14 21:26:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 2890 transitions. [2020-10-14 21:26:20,660 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 2890 transitions. Word has length 42 [2020-10-14 21:26:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:20,661 INFO L479 AbstractCegarLoop]: Abstraction has 1883 states and 2890 transitions. [2020-10-14 21:26:20,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:26:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 2890 transitions. [2020-10-14 21:26:20,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-14 21:26:20,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:20,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:20,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:26:20,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:20,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash -2060234465, now seen corresponding path program 1 times [2020-10-14 21:26:20,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:20,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466846251] [2020-10-14 21:26:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:20,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:21,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:22,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:22,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:26:22,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:26:22,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1702 [2020-10-14 21:26:22,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:22,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:22,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:26:22,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 21:26:22,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:22,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:26:22,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:22,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:26:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:22,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:22,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:22,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:26:22,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:22,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 21:26:22,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:22,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:22,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:22,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:26:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:26:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:22,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466846251] [2020-10-14 21:26:22,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:22,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:26:22,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041030037] [2020-10-14 21:26:22,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:22,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:22,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:22,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:22,855 INFO L87 Difference]: Start difference. First operand 1883 states and 2890 transitions. Second operand 7 states. [2020-10-14 21:26:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:26:48,237 INFO L93 Difference]: Finished difference Result 5680 states and 8713 transitions. [2020-10-14 21:26:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:26:48,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-14 21:26:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:26:48,270 INFO L225 Difference]: With dead ends: 5680 [2020-10-14 21:26:48,270 INFO L226 Difference]: Without dead ends: 3803 [2020-10-14 21:26:48,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:26:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3803 states. [2020-10-14 21:26:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3803 to 3700. [2020-10-14 21:26:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3700 states. [2020-10-14 21:26:48,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3700 states to 3700 states and 5252 transitions. [2020-10-14 21:26:48,400 INFO L78 Accepts]: Start accepts. Automaton has 3700 states and 5252 transitions. Word has length 111 [2020-10-14 21:26:48,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:26:48,401 INFO L479 AbstractCegarLoop]: Abstraction has 3700 states and 5252 transitions. [2020-10-14 21:26:48,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:26:48,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3700 states and 5252 transitions. [2020-10-14 21:26:48,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 21:26:48,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:48,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:48,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:26:48,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:48,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:48,407 INFO L82 PathProgramCache]: Analyzing trace with hash -857763753, now seen corresponding path program 1 times [2020-10-14 21:26:48,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:48,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732271044] [2020-10-14 21:26:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 21:26:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:26:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1119 [2020-10-14 21:26:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:49,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:26:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:26:49,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:49,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:49,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:49,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:49,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:26:49,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:49,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:49,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:49,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:26:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:49,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:26:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 21:26:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:49,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:26:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:26:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:26:49,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:50,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732271044] [2020-10-14 21:26:50,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:50,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:26:50,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741168571] [2020-10-14 21:26:50,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:26:50,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:26:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:26:50,095 INFO L87 Difference]: Start difference. First operand 3700 states and 5252 transitions. Second operand 7 states. [2020-10-14 21:27:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:10,015 INFO L93 Difference]: Finished difference Result 10978 states and 15747 transitions. [2020-10-14 21:27:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:27:10,016 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-14 21:27:10,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:10,061 INFO L225 Difference]: With dead ends: 10978 [2020-10-14 21:27:10,061 INFO L226 Difference]: Without dead ends: 7284 [2020-10-14 21:27:10,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:27:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7284 states. [2020-10-14 21:27:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7284 to 7114. [2020-10-14 21:27:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7114 states. [2020-10-14 21:27:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7114 states to 7114 states and 9122 transitions. [2020-10-14 21:27:10,299 INFO L78 Accepts]: Start accepts. Automaton has 7114 states and 9122 transitions. Word has length 147 [2020-10-14 21:27:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:10,307 INFO L479 AbstractCegarLoop]: Abstraction has 7114 states and 9122 transitions. [2020-10-14 21:27:10,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 7114 states and 9122 transitions. [2020-10-14 21:27:10,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 21:27:10,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:10,320 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:27:10,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:27:10,321 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:10,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1105762533, now seen corresponding path program 1 times [2020-10-14 21:27:10,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:10,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715202724] [2020-10-14 21:27:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:15,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:15,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 21:27:15,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:27:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 21:27:15,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:15,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:27:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:27:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:15,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:15,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:27:15,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:15,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:27:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:27:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:15,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:15,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:15,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:15,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:27:15,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:15,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 21:27:15,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:15,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:15,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:27:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:15,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:27:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:15,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:16,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:16,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:27:16,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 21:27:16,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:16,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:16,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:27:16,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:27:16,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715202724] [2020-10-14 21:27:16,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:16,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:27:16,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534012015] [2020-10-14 21:27:16,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:16,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:16,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:16,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:16,363 INFO L87 Difference]: Start difference. First operand 7114 states and 9122 transitions. Second operand 7 states. [2020-10-14 21:27:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:44,252 INFO L93 Difference]: Finished difference Result 19034 states and 25795 transitions. [2020-10-14 21:27:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:27:44,255 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-14 21:27:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:44,340 INFO L225 Difference]: With dead ends: 19034 [2020-10-14 21:27:44,340 INFO L226 Difference]: Without dead ends: 12729 [2020-10-14 21:27:44,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:27:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12729 states. [2020-10-14 21:27:44,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12729 to 12431. [2020-10-14 21:27:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12431 states. [2020-10-14 21:27:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12431 states to 12431 states and 16567 transitions. [2020-10-14 21:27:44,818 INFO L78 Accepts]: Start accepts. Automaton has 12431 states and 16567 transitions. Word has length 242 [2020-10-14 21:27:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:44,820 INFO L479 AbstractCegarLoop]: Abstraction has 12431 states and 16567 transitions. [2020-10-14 21:27:44,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 12431 states and 16567 transitions. [2020-10-14 21:27:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-14 21:27:44,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:44,834 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:27:44,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:27:44,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:44,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:44,835 INFO L82 PathProgramCache]: Analyzing trace with hash 728668177, now seen corresponding path program 1 times [2020-10-14 21:27:44,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:44,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642178013] [2020-10-14 21:27:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:45,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:48,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:49,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:49,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-14 21:27:49,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:27:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-14 21:27:49,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:49,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:27:49,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:49,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 21:27:49,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:27:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:50,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:50,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:50,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:50,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:27:50,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:50,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:50,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:50,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:27:50,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:50,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 21:27:50,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:50,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:50,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:50,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:27:50,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:27:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:50,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:50,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 21:27:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-14 21:27:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:50,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 21:27:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:27:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:27:51,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642178013] [2020-10-14 21:27:51,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:27:51,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:27:51,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111366264] [2020-10-14 21:27:51,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:27:51,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:51,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:27:51,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:27:51,247 INFO L87 Difference]: Start difference. First operand 12431 states and 16567 transitions. Second operand 8 states. [2020-10-14 21:27:56,585 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-14 21:28:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:34,404 INFO L93 Difference]: Finished difference Result 39706 states and 58374 transitions. [2020-10-14 21:28:34,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:28:34,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 312 [2020-10-14 21:28:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:34,621 INFO L225 Difference]: With dead ends: 39706 [2020-10-14 21:28:34,622 INFO L226 Difference]: Without dead ends: 28084 [2020-10-14 21:28:34,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:28:34,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28084 states. [2020-10-14 21:28:35,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28084 to 27938. [2020-10-14 21:28:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27938 states. [2020-10-14 21:28:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27938 states to 27938 states and 37069 transitions. [2020-10-14 21:28:35,795 INFO L78 Accepts]: Start accepts. Automaton has 27938 states and 37069 transitions. Word has length 312 [2020-10-14 21:28:35,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:35,796 INFO L479 AbstractCegarLoop]: Abstraction has 27938 states and 37069 transitions. [2020-10-14 21:28:35,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:28:35,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27938 states and 37069 transitions. [2020-10-14 21:28:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-14 21:28:35,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:35,806 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:28:35,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:28:35,807 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:35,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:35,808 INFO L82 PathProgramCache]: Analyzing trace with hash 136754457, now seen corresponding path program 1 times [2020-10-14 21:28:35,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:35,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818909191] [2020-10-14 21:28:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:40,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:40,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:40,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 21:28:40,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:28:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 21:28:40,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:40,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:28:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:28:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 21:28:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:41,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:41,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:41,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:41,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:28:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:41,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:28:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:41,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:28:41,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:28:41,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:41,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:41,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:28:41,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:41,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 21:28:41,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:41,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:41,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:28:41,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:28:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:41,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:41,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:41,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:28:41,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:41,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 21:28:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:41,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:28:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 21:28:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:41,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:41,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 21:28:41,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:41,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 21:28:41,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:41,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:41,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:28:41,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:28:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 269 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 21:28:42,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818909191] [2020-10-14 21:28:42,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:28:42,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:28:42,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79614403] [2020-10-14 21:28:42,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:28:42,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:42,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:28:42,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:28:42,500 INFO L87 Difference]: Start difference. First operand 27938 states and 37069 transitions. Second operand 7 states. [2020-10-14 21:29:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:13,343 INFO L93 Difference]: Finished difference Result 70004 states and 99378 transitions. [2020-10-14 21:29:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:29:13,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-14 21:29:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:13,556 INFO L225 Difference]: With dead ends: 70004 [2020-10-14 21:29:13,556 INFO L226 Difference]: Without dead ends: 42875 [2020-10-14 21:29:13,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 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 21:29:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42875 states. [2020-10-14 21:29:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42875 to 42606. [2020-10-14 21:29:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42606 states. [2020-10-14 21:29:14,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42606 states to 42606 states and 55918 transitions. [2020-10-14 21:29:14,867 INFO L78 Accepts]: Start accepts. Automaton has 42606 states and 55918 transitions. Word has length 314 [2020-10-14 21:29:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:14,868 INFO L479 AbstractCegarLoop]: Abstraction has 42606 states and 55918 transitions. [2020-10-14 21:29:14,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:29:14,868 INFO L276 IsEmpty]: Start isEmpty. Operand 42606 states and 55918 transitions. [2020-10-14 21:29:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 21:29:14,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:14,883 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 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 21:29:14,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:29:14,883 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:14,884 INFO L82 PathProgramCache]: Analyzing trace with hash -755043091, now seen corresponding path program 1 times [2020-10-14 21:29:14,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:14,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766984654] [2020-10-14 21:29:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:15,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:15,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:15,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:15,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:16,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:18,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:20,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:20,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-14 21:29:20,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 21:29:20,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 21:29:20,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:20,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:20,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:20,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:20,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-14 21:29:20,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:20,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:20,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:20,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:20,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:20,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:29:20,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:20,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:20,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:20,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:20,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:20,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:20,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:29:20,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 21:29:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:20,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:29:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:20,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:29:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:20,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:20,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:20,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:29:20,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 21:29:20,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:20,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 21:29:20,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 21:29:20,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:29:20,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-14 21:29:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:20,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:20,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-14 21:29:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:29:20,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:20,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 21:29:20,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:20,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-14 21:29:20,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766984654] [2020-10-14 21:29:20,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:20,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:29:20,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639142853] [2020-10-14 21:29:20,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:29:20,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:20,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:29:20,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:29:20,892 INFO L87 Difference]: Start difference. First operand 42606 states and 55918 transitions. Second operand 6 states.