/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:20:36,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:20:36,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:20:36,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:20:36,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:20:36,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:20:36,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:20:36,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:20:36,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:20:36,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:20:36,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:20:36,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:20:36,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:20:36,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:20:36,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:20:36,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:20:36,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:20:36,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:20:36,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:20:36,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:20:36,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:20:36,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:20:36,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:20:36,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:20:36,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:20:36,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:20:36,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:20:36,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:20:36,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:20:36,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:20:36,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:20:36,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:20:36,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:20:36,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:20:36,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:20:36,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:20:36,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:20:36,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:20:36,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:20:36,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:20:36,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:20:36,649 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 11:20:36,694 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:20:36,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:20:36,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:20:36,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:20:36,697 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:20:36,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:20:36,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:20:36,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:20:36,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:20:36,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:20:36,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:20:36,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:20:36,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:20:36,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:20:36,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:20:36,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:20:36,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:20:36,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:20:36,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:20:36,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:20:36,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:20:36,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:20:36,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:20:36,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:20:36,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:20:36,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:20:36,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:20:36,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:20:36,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:20:36,705 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:20:37,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:20:37,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:20:37,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:20:37,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:20:37,181 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:20:37,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 11:20:37,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51e7e89a/9f32e05ab8074ad9ac112920b37d95a1/FLAGbdc53bc1e [2020-09-25 11:20:37,997 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:20:37,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-25 11:20:38,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51e7e89a/9f32e05ab8074ad9ac112920b37d95a1/FLAGbdc53bc1e [2020-09-25 11:20:38,169 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e51e7e89a/9f32e05ab8074ad9ac112920b37d95a1 [2020-09-25 11:20:38,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:20:38,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:20:38,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:38,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:20:38,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:20:38,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:38" (1/1) ... [2020-09-25 11:20:38,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:38, skipping insertion in model container [2020-09-25 11:20:38,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:20:38" (1/1) ... [2020-09-25 11:20:38,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:20:38,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:20:38,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:38,920 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:20:39,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:20:39,074 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:20:39,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39 WrapperNode [2020-09-25 11:20:39,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:20:39,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:20:39,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:20:39,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:20:39,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (1/1) ... [2020-09-25 11:20:39,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (1/1) ... [2020-09-25 11:20:39,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (1/1) ... [2020-09-25 11:20:39,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (1/1) ... [2020-09-25 11:20:39,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (1/1) ... [2020-09-25 11:20:39,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (1/1) ... [2020-09-25 11:20:39,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (1/1) ... [2020-09-25 11:20:39,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:20:39,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:20:39,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:20:39,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:20:39,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (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 11:20:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:20:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:20:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:20:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:20:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:20:39,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:20:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:20:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:20:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:20:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:20:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:41,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:41,203 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:41,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:41 BoogieIcfgContainer [2020-09-25 11:20:41,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:41,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:41,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:41,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:41,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:20:38" (1/3) ... [2020-09-25 11:20:41,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3c6409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:41, skipping insertion in model container [2020-09-25 11:20:41,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:20:39" (2/3) ... [2020-09-25 11:20:41,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3c6409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:41, skipping insertion in model container [2020-09-25 11:20:41,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:41" (3/3) ... [2020-09-25 11:20:41,237 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-25 11:20:41,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:41,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:41,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:41,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:41,339 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:41,340 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:41,340 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:41,340 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:41,340 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:41,340 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:41,341 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:41,387 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 11:20:41,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:20:41,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:41,406 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] [2020-09-25 11:20:41,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:41,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:41,416 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-25 11:20:41,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:41,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368028685] [2020-09-25 11:20:41,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:42,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:20:42,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:42,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-09-25 11:20:42,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:42,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 11:20:42,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:20:42,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:42,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:42,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:42,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:42,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:42,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:20:42,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:42,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:42,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:42,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:42,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:42,571 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 11:20:42,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368028685] [2020-09-25 11:20:42,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:42,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:20:42,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276021806] [2020-09-25 11:20:42,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:20:42,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:42,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:20:42,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:20:42,612 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 11:20:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:45,345 INFO L93 Difference]: Finished difference Result 1564 states and 2106 transitions. [2020-09-25 11:20:45,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:20:45,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 11:20:45,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:45,378 INFO L225 Difference]: With dead ends: 1564 [2020-09-25 11:20:45,378 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 11:20:45,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 11:20:45,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 806. [2020-09-25 11:20:45,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 11:20:45,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 982 transitions. [2020-09-25 11:20:45,508 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 982 transitions. Word has length 67 [2020-09-25 11:20:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:45,509 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 982 transitions. [2020-09-25 11:20:45,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:20:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 982 transitions. [2020-09-25 11:20:45,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 11:20:45,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:45,519 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:20:45,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:45,519 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:45,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:45,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1248724664, now seen corresponding path program 1 times [2020-09-25 11:20:45,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:45,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749838883] [2020-09-25 11:20:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:48,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:49,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 11:20:50,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 11:20:50,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:20:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 11:20:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:50,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:20:50,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:50,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:50,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:20:50,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:50,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:51,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:51,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:51,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:20:51,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-25 11:20:51,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:51,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:20:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:20:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:51,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749838883] [2020-09-25 11:20:51,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:51,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:20:51,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818485921] [2020-09-25 11:20:51,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:20:51,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:20:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:20:51,170 INFO L87 Difference]: Start difference. First operand 806 states and 982 transitions. Second operand 8 states. [2020-09-25 11:20:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:55,965 INFO L93 Difference]: Finished difference Result 2929 states and 3856 transitions. [2020-09-25 11:20:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:20:55,966 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 146 [2020-09-25 11:20:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:55,989 INFO L225 Difference]: With dead ends: 2929 [2020-09-25 11:20:55,990 INFO L226 Difference]: Without dead ends: 2138 [2020-09-25 11:20:55,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2020-09-25 11:20:56,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2079. [2020-09-25 11:20:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2079 states. [2020-09-25 11:20:56,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2622 transitions. [2020-09-25 11:20:56,149 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2622 transitions. Word has length 146 [2020-09-25 11:20:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:56,153 INFO L479 AbstractCegarLoop]: Abstraction has 2079 states and 2622 transitions. [2020-09-25 11:20:56,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:20:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2622 transitions. [2020-09-25 11:20:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 11:20:56,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:56,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:56,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:56,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:56,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:56,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-25 11:20:56,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:56,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985770152] [2020-09-25 11:20:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:56,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:58,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:00,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:00,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 11:21:00,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:21:00,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4022 [2020-09-25 11:21:00,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:00,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:21:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:21:00,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:21:00,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:21:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:00,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:00,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:21:00,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:00,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:21:00,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:00,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:00,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:21:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:21:00,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:00,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:21:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:00,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:00,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:00,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:00,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:21:00,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:21:00,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 11:21:00,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:00,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:21:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:21:00,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:21:00,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 7 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:21:00,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985770152] [2020-09-25 11:21:00,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:21:00,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:21:00,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927182805] [2020-09-25 11:21:00,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:21:00,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:21:00,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:21:00,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:21:00,675 INFO L87 Difference]: Start difference. First operand 2079 states and 2622 transitions. Second operand 8 states. [2020-09-25 11:21:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:21:04,156 INFO L93 Difference]: Finished difference Result 5087 states and 6603 transitions. [2020-09-25 11:21:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:21:04,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-25 11:21:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:21:04,173 INFO L225 Difference]: With dead ends: 5087 [2020-09-25 11:21:04,174 INFO L226 Difference]: Without dead ends: 3023 [2020-09-25 11:21:04,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:21:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2020-09-25 11:21:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2133. [2020-09-25 11:21:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-09-25 11:21:04,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 2561 transitions. [2020-09-25 11:21:04,253 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 2561 transitions. Word has length 149 [2020-09-25 11:21:04,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:21:04,253 INFO L479 AbstractCegarLoop]: Abstraction has 2133 states and 2561 transitions. [2020-09-25 11:21:04,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:21:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 2561 transitions. [2020-09-25 11:21:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-25 11:21:04,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:21:04,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:04,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:21:04,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:21:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:21:04,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1077856175, now seen corresponding path program 1 times [2020-09-25 11:21:04,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:21:04,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687722948] [2020-09-25 11:21:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:21:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:04,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:05,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:06,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:09,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:09,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 11:21:09,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:21:09,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 11:21:09,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:09,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:09,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:21:09,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 11:21:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 11:21:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:09,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:21:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:09,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:09,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:09,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:21:09,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:09,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:21:09,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:09,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:21:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:09,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:21:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:09,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:21:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:09,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:09,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:21:09,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:21:09,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 11:21:09,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:09,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:21:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:09,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:21:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:09,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 11:21:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:09,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:21:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 11:21:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:09,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:09,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:21:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:21:09,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 11:21:09,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:21:10,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687722948] [2020-09-25 11:21:10,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:21:10,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:21:10,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447215146] [2020-09-25 11:21:10,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:21:10,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:21:10,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:21:10,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:21:10,383 INFO L87 Difference]: Start difference. First operand 2133 states and 2561 transitions. Second operand 8 states. [2020-09-25 11:21:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:21:15,348 INFO L93 Difference]: Finished difference Result 5277 states and 6707 transitions. [2020-09-25 11:21:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:21:15,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 244 [2020-09-25 11:21:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:21:15,368 INFO L225 Difference]: With dead ends: 5277 [2020-09-25 11:21:15,369 INFO L226 Difference]: Without dead ends: 3159 [2020-09-25 11:21:15,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:21:15,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2020-09-25 11:21:15,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 2674. [2020-09-25 11:21:15,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2674 states. [2020-09-25 11:21:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3210 transitions. [2020-09-25 11:21:15,462 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3210 transitions. Word has length 244 [2020-09-25 11:21:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:21:15,463 INFO L479 AbstractCegarLoop]: Abstraction has 2674 states and 3210 transitions. [2020-09-25 11:21:15,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:21:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3210 transitions. [2020-09-25 11:21:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-25 11:21:15,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:21:15,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:15,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:21:15,470 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:21:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:21:15,471 INFO L82 PathProgramCache]: Analyzing trace with hash -740360978, now seen corresponding path program 1 times [2020-09-25 11:21:15,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:21:15,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141323731] [2020-09-25 11:21:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:21:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:15,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:15,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:16,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:16,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:17,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:20,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:20,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-09-25 11:21:20,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:21:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:21:20,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:20,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:20,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:21:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 11:21:20,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 11:21:20,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:21:20,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:21:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:20,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:21:20,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:21:20,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:20,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:20,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:21:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:20,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:21:20,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 11:21:20,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:21:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:20,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:20,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:21:20,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 11:21:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:20,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:21:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:21:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 11:21:20,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:20,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-25 11:21:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:21,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:21:21,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 11:21:21,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:21:21,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-25 11:21:21,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:21:21,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:21:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:21:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:21:21,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 11:21:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:21:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:21:21,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141323731] [2020-09-25 11:21:21,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:21:21,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:21:21,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159980859] [2020-09-25 11:21:21,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:21:21,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:21:21,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:21:21,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:21:21,315 INFO L87 Difference]: Start difference. First operand 2674 states and 3210 transitions. Second operand 7 states. [2020-09-25 11:21:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:21:25,030 INFO L93 Difference]: Finished difference Result 6128 states and 7593 transitions. [2020-09-25 11:21:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:21:25,032 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 299 [2020-09-25 11:21:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:21:25,048 INFO L225 Difference]: With dead ends: 6128 [2020-09-25 11:21:25,049 INFO L226 Difference]: Without dead ends: 2390 [2020-09-25 11:21:25,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:21:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2020-09-25 11:21:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1934. [2020-09-25 11:21:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-09-25 11:21:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 2137 transitions. [2020-09-25 11:21:25,124 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 2137 transitions. Word has length 299 [2020-09-25 11:21:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:21:25,125 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 2137 transitions. [2020-09-25 11:21:25,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:21:25,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 2137 transitions. [2020-09-25 11:21:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-09-25 11:21:25,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:21:25,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:21:25,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:21:25,134 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:21:25,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:21:25,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1472936979, now seen corresponding path program 1 times [2020-09-25 11:21:25,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:21:25,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035043606] [2020-09-25 11:21:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:21:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:21:25,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:21:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking...