/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 SingleStatement --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:01,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:01,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:01,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:01,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:01,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:01,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:01,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:01,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:01,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:01,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:01,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:01,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:01,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:01,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:01,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:01,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:01,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:01,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:01,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:01,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:01,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:01,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:01,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:01,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:01,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:01,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:01,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:01,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:01,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:01,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:01,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:01,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:01,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:01,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:01,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:01,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:01,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:01,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:01,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:01,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:01,141 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 [2020-09-25 07:55:01,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:01,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:01,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:01,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:01,191 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:01,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:01,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:01,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:01,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:01,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:01,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:01,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:01,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:01,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:01,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:01,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:01,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:01,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:01,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:01,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:01,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:01,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:01,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:01,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:01,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:01,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:01,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:01,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:01,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:01,198 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 -> SingleStatement 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:01,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:01,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:01,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:01,684 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:01,685 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:01,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 07:55:01,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05bd010c1/d8fbde2d9f16496e9b665fd1b519ca63/FLAG85a0fd2f0 [2020-09-25 07:55:02,546 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:02,547 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label51.c [2020-09-25 07:55:02,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05bd010c1/d8fbde2d9f16496e9b665fd1b519ca63/FLAG85a0fd2f0 [2020-09-25 07:55:02,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/05bd010c1/d8fbde2d9f16496e9b665fd1b519ca63 [2020-09-25 07:55:02,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:02,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:02,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:02,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:02,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:02,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:02" (1/1) ... [2020-09-25 07:55:02,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5614dc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:02, skipping insertion in model container [2020-09-25 07:55:02,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:02" (1/1) ... [2020-09-25 07:55:02,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:02,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:03,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:03,326 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:03,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:03,502 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:03,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03 WrapperNode [2020-09-25 07:55:03,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:03,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:03,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:03,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:03,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (1/1) ... [2020-09-25 07:55:03,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:03,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:03,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:03,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:03,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (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 [2020-09-25 07:55:03,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:03,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:03,722 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:03,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:05,115 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:05,115 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:05,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:05 BoogieIcfgContainer [2020-09-25 07:55:05,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:05,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:05,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:05,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:05,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:02" (1/3) ... [2020-09-25 07:55:05,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36772b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:05, skipping insertion in model container [2020-09-25 07:55:05,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:03" (2/3) ... [2020-09-25 07:55:05,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36772b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:05, skipping insertion in model container [2020-09-25 07:55:05,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:05" (3/3) ... [2020-09-25 07:55:05,139 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-09-25 07:55:05,152 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:05,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:05,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:05,243 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:05,243 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:05,243 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:05,243 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:05,243 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:05,244 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:05,244 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:05,244 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 07:55:05,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 07:55:05,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:05,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:05,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1376443753, now seen corresponding path program 1 times [2020-09-25 07:55:05,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:05,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547964207] [2020-09-25 07:55:05,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:07,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:55:10,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 07:55:10,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:10,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:10,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 07:55:10,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 07:55:10,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:55:10,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:10,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:10,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:10,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:10,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:55:10,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:10,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:10,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 07:55:10,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:10,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547964207] [2020-09-25 07:55:10,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:10,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:10,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008924580] [2020-09-25 07:55:10,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:10,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:10,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:10,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:10,961 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 07:55:13,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:13,413 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 07:55:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:13,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 07:55:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:13,466 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 07:55:13,467 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 07:55:13,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 07:55:13,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 07:55:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 07:55:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 07:55:13,678 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 136 [2020-09-25 07:55:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:13,680 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 07:55:13,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 07:55:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 07:55:13,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:13,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:13,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:13,690 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:13,690 INFO L82 PathProgramCache]: Analyzing trace with hash 685540285, now seen corresponding path program 1 times [2020-09-25 07:55:13,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:13,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710301228] [2020-09-25 07:55:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:13,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:14,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:16,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:18,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 07:55:18,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:55:18,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:55:18,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:18,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:18,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:55:18,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 07:55:18,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:55:18,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:18,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:18,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:18,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:18,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:18,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:18,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:18,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:18,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:18,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:55:18,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:18,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 07:55:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:19,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710301228] [2020-09-25 07:55:19,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:19,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:19,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770315000] [2020-09-25 07:55:19,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:19,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:19,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:19,062 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 07:55:21,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:21,129 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-25 07:55:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:21,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 07:55:21,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:21,138 INFO L225 Difference]: With dead ends: 1608 [2020-09-25 07:55:21,138 INFO L226 Difference]: Without dead ends: 971 [2020-09-25 07:55:21,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:21,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-25 07:55:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-25 07:55:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 07:55:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 07:55:21,177 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 154 [2020-09-25 07:55:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:21,178 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 07:55:21,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 07:55:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 07:55:21,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:21,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:21,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:21,185 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:21,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1901105650, now seen corresponding path program 1 times [2020-09-25 07:55:21,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:21,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596685392] [2020-09-25 07:55:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:24,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 07:55:26,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:26,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 07:55:26,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:26,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:55:26,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 07:55:26,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:55:26,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:26,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:26,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 07:55:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:55:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:26,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:26,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:26,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:55:26,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:55:26,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:26,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 07:55:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:26,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596685392] [2020-09-25 07:55:26,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:26,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:55:26,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292252417] [2020-09-25 07:55:26,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:26,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:26,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:26,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:26,614 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 8 states. [2020-09-25 07:55:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:29,536 INFO L93 Difference]: Finished difference Result 3347 states and 4496 transitions. [2020-09-25 07:55:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:55:29,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 180 [2020-09-25 07:55:29,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:29,556 INFO L225 Difference]: With dead ends: 3347 [2020-09-25 07:55:29,556 INFO L226 Difference]: Without dead ends: 2408 [2020-09-25 07:55:29,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 07:55:29,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-09-25 07:55:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2311. [2020-09-25 07:55:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2311 states. [2020-09-25 07:55:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 2982 transitions. [2020-09-25 07:55:29,678 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 2982 transitions. Word has length 180 [2020-09-25 07:55:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:29,679 INFO L479 AbstractCegarLoop]: Abstraction has 2311 states and 2982 transitions. [2020-09-25 07:55:29,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 2982 transitions. [2020-09-25 07:55:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 07:55:29,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:29,693 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:29,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:29,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:29,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:29,694 INFO L82 PathProgramCache]: Analyzing trace with hash 361672380, now seen corresponding path program 1 times [2020-09-25 07:55:29,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:29,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064667999] [2020-09-25 07:55:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:29,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 07:55:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:55:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 07:55:34,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 07:55:34,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 07:55:34,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:34,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:34,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:34,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:34,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:34,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:55:34,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:34,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:34,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:55:35,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:35,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:35,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:35,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:55:35,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:35,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:35,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:35,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:35,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:35,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:35,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 07:55:35,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:35,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 07:55:35,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:35,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:35,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:35,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:55:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:55:35,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064667999] [2020-09-25 07:55:35,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:35,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:55:35,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877129768] [2020-09-25 07:55:35,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:55:35,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:35,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:55:35,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:35,510 INFO L87 Difference]: Start difference. First operand 2311 states and 2982 transitions. Second operand 8 states. [2020-09-25 07:55:39,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:39,770 INFO L93 Difference]: Finished difference Result 6738 states and 9008 transitions. [2020-09-25 07:55:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:39,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2020-09-25 07:55:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:39,796 INFO L225 Difference]: With dead ends: 6738 [2020-09-25 07:55:39,796 INFO L226 Difference]: Without dead ends: 4239 [2020-09-25 07:55:39,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:39,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2020-09-25 07:55:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 4170. [2020-09-25 07:55:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4170 states. [2020-09-25 07:55:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 5226 transitions. [2020-09-25 07:55:39,954 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 5226 transitions. Word has length 192 [2020-09-25 07:55:39,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:39,954 INFO L479 AbstractCegarLoop]: Abstraction has 4170 states and 5226 transitions. [2020-09-25 07:55:39,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:55:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 5226 transitions. [2020-09-25 07:55:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 07:55:39,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:39,970 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:39,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:39,971 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:39,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:39,971 INFO L82 PathProgramCache]: Analyzing trace with hash 226560582, now seen corresponding path program 1 times [2020-09-25 07:55:39,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:39,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116429937] [2020-09-25 07:55:39,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:40,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:40,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 07:55:45,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:55:45,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:55:45,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 07:55:45,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 07:55:45,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:45,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 07:55:45,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:55:45,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:55:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 07:55:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 07:55:45,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:45,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:55:45,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:45,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:45,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:45,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 07:55:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:45,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:45,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:45,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 07:55:45,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:45,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 07:55:45,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:45,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:45,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 07:55:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 07:55:45,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116429937] [2020-09-25 07:55:45,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:45,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:55:45,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177776176] [2020-09-25 07:55:45,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:55:45,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:45,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:55:45,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:45,302 INFO L87 Difference]: Start difference. First operand 4170 states and 5226 transitions. Second operand 5 states. [2020-09-25 07:55:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:47,327 INFO L93 Difference]: Finished difference Result 10200 states and 13178 transitions. [2020-09-25 07:55:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:55:47,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-09-25 07:55:47,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:47,329 INFO L225 Difference]: With dead ends: 10200 [2020-09-25 07:55:47,329 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:55:47,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:47,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:55:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:55:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:55:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:55:47,354 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 198 [2020-09-25 07:55:47,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:47,354 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:55:47,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:55:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:55:47,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:55:47,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:55:47,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 07:55:48,530 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 24 [2020-09-25 07:55:48,721 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 24 [2020-09-25 07:55:49,162 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 45