/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/Problem01_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:13:38,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:13:38,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:13:38,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:13:38,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:13:38,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:13:38,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:13:38,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:13:38,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:13:38,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:13:38,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:13:38,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:13:38,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:13:38,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:13:38,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:13:38,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:13:38,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:13:38,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:13:38,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:13:38,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:13:38,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:13:38,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:13:38,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:13:38,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:13:38,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:13:38,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:13:38,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:13:38,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:13:38,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:13:38,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:13:38,605 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:13:38,606 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:13:38,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:13:38,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:13:38,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:13:38,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:13:38,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:13:38,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:13:38,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:13:38,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:13:38,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:13:38,615 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 11:13:38,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:13:38,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:13:38,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:13:38,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:13:38,670 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:13:38,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:13:38,671 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:13:38,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:13:38,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:13:38,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:13:38,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:13:38,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:13:38,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:13:38,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:13:38,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:13:38,674 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:13:38,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:13:38,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:13:38,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:13:38,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:13:38,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:13:38,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:13:38,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:13:38,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:13:38,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:13:38,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:13:38,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:13:38,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:13:38,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:13:38,677 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 11:13:39,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:13:39,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:13:39,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:13:39,163 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:13:39,164 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:13:39,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 11:13:39,246 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b2b76466/37eb48a83ae3436a9aa6fcc69c641e78/FLAGd99309a4e [2020-09-25 11:13:39,911 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:13:39,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 11:13:39,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b2b76466/37eb48a83ae3436a9aa6fcc69c641e78/FLAGd99309a4e [2020-09-25 11:13:40,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b2b76466/37eb48a83ae3436a9aa6fcc69c641e78 [2020-09-25 11:13:40,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:13:40,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:13:40,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:40,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:13:40,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:13:40,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:40" (1/1) ... [2020-09-25 11:13:40,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:40, skipping insertion in model container [2020-09-25 11:13:40,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:13:40" (1/1) ... [2020-09-25 11:13:40,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:13:40,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:40,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:40,807 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:41,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:41,050 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:41,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41 WrapperNode [2020-09-25 11:13:41,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:41,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:41,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:41,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:41,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (1/1) ... [2020-09-25 11:13:41,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (1/1) ... [2020-09-25 11:13:41,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (1/1) ... [2020-09-25 11:13:41,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (1/1) ... [2020-09-25 11:13:41,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (1/1) ... [2020-09-25 11:13:41,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (1/1) ... [2020-09-25 11:13:41,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (1/1) ... [2020-09-25 11:13:41,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:41,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:41,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:41,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:41,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (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 11:13:41,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:13:41,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:13:41,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:42,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:42,658 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:13:42,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:42 BoogieIcfgContainer [2020-09-25 11:13:42,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:42,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:42,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:42,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:42,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:13:40" (1/3) ... [2020-09-25 11:13:42,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258e7ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:42, skipping insertion in model container [2020-09-25 11:13:42,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:41" (2/3) ... [2020-09-25 11:13:42,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258e7ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:42, skipping insertion in model container [2020-09-25 11:13:42,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:42" (3/3) ... [2020-09-25 11:13:42,678 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 11:13:42,691 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:42,703 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:42,726 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:42,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:42,767 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:42,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:42,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:42,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:42,768 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:42,768 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:42,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:13:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 11:13:42,827 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:42,829 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:42,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:42,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:42,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 11:13:42,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:42,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994751028] [2020-09-25 11:13:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:43,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:44,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:48,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 11:13:48,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:13:48,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:13:48,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:48,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:48,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:13:48,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 11:13:48,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:13:48,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:48,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:48,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:48,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 11:13:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:48,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:13:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:13:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:48,607 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 11:13:48,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994751028] [2020-09-25 11:13:48,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:48,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:13:48,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43378531] [2020-09-25 11:13:48,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:13:48,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:48,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:13:48,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:13:48,643 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:13:50,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:50,794 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 11:13:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:13:50,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 11:13:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:50,844 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 11:13:50,845 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 11:13:50,854 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 11:13:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 11:13:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 11:13:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 11:13:50,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 11:13:50,968 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 144 [2020-09-25 11:13:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:50,973 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 11:13:50,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:13:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 11:13:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 11:13:50,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:50,982 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 11:13:50,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:13:50,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:50,983 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-25 11:13:50,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:50,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506847112] [2020-09-25 11:13:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:52,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:53,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:56,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 11:13:56,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:13:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 11:13:56,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:56,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:13:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 11:13:56,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 11:13:56,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:13:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:13:56,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:56,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:56,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:13:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:56,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:56,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:56,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:13:56,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 11:13:56,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:56,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:56,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:13:56,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:56,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506847112] [2020-09-25 11:13:56,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:56,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:13:56,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956311179] [2020-09-25 11:13:56,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:13:56,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:56,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:13:56,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:13:56,920 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 9 states. [2020-09-25 11:13:57,793 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-25 11:14:02,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:02,328 INFO L93 Difference]: Finished difference Result 2178 states and 2848 transitions. [2020-09-25 11:14:02,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:14:02,328 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 165 [2020-09-25 11:14:02,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:02,342 INFO L225 Difference]: With dead ends: 2178 [2020-09-25 11:14:02,342 INFO L226 Difference]: Without dead ends: 1100 [2020-09-25 11:14:02,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 11:14:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-09-25 11:14:02,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1064. [2020-09-25 11:14:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-09-25 11:14:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1200 transitions. [2020-09-25 11:14:02,412 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1200 transitions. Word has length 165 [2020-09-25 11:14:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:02,413 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1200 transitions. [2020-09-25 11:14:02,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:14:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1200 transitions. [2020-09-25 11:14:02,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 11:14:02,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:02,422 INFO L422 BasicCegarLoop]: trace histogram [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, 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 11:14:02,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:14:02,422 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:02,423 INFO L82 PathProgramCache]: Analyzing trace with hash -289310937, now seen corresponding path program 1 times [2020-09-25 11:14:02,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:02,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922223744] [2020-09-25 11:14:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:02,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:02,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:04,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:06,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:07,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 11:14:07,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:14:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:14:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:07,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 11:14:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 11:14:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:07,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:07,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:07,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:07,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:14:07,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:07,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:07,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:07,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:07,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:07,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:07,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 11:14:07,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:07,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 11:14:07,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:07,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:07,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:14:07,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:07,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922223744] [2020-09-25 11:14:07,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:07,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:07,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916770372] [2020-09-25 11:14:07,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:07,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:07,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:07,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:07,781 INFO L87 Difference]: Start difference. First operand 1064 states and 1200 transitions. Second operand 5 states. [2020-09-25 11:14:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:09,821 INFO L93 Difference]: Finished difference Result 2435 states and 2832 transitions. [2020-09-25 11:14:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:09,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-25 11:14:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:09,834 INFO L225 Difference]: With dead ends: 2435 [2020-09-25 11:14:09,835 INFO L226 Difference]: Without dead ends: 1240 [2020-09-25 11:14:09,839 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 11:14:09,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2020-09-25 11:14:09,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1193. [2020-09-25 11:14:09,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1193 states. [2020-09-25 11:14:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1358 transitions. [2020-09-25 11:14:09,897 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1358 transitions. Word has length 170 [2020-09-25 11:14:09,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:09,899 INFO L479 AbstractCegarLoop]: Abstraction has 1193 states and 1358 transitions. [2020-09-25 11:14:09,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1358 transitions. [2020-09-25 11:14:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 11:14:09,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:09,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:09,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:14:09,910 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:09,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:09,910 INFO L82 PathProgramCache]: Analyzing trace with hash -64061830, now seen corresponding path program 1 times [2020-09-25 11:14:09,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:09,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047267084] [2020-09-25 11:14:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:10,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:10,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:14,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:14,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 11:14:14,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:14:14,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:14:15,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:15,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 11:14:15,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:14:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:15,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:15,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:15,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:15,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:14:15,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:15,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:15,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:15,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:15,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 11:14:15,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 11:14:15,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:15,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:15,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:14:15,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:15,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047267084] [2020-09-25 11:14:15,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:15,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:15,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850244619] [2020-09-25 11:14:15,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:15,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:15,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:15,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:15,378 INFO L87 Difference]: Start difference. First operand 1193 states and 1358 transitions. Second operand 5 states. [2020-09-25 11:14:17,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:17,141 INFO L93 Difference]: Finished difference Result 3002 states and 3516 transitions. [2020-09-25 11:14:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:17,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 11:14:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:17,156 INFO L225 Difference]: With dead ends: 3002 [2020-09-25 11:14:17,156 INFO L226 Difference]: Without dead ends: 1833 [2020-09-25 11:14:17,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:14:17,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2020-09-25 11:14:17,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1487. [2020-09-25 11:14:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1487 states. [2020-09-25 11:14:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 1737 transitions. [2020-09-25 11:14:17,222 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 1737 transitions. Word has length 191 [2020-09-25 11:14:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:17,223 INFO L479 AbstractCegarLoop]: Abstraction has 1487 states and 1737 transitions. [2020-09-25 11:14:17,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 1737 transitions. [2020-09-25 11:14:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 11:14:17,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:17,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:17,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:14:17,231 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:17,232 INFO L82 PathProgramCache]: Analyzing trace with hash -656669948, now seen corresponding path program 1 times [2020-09-25 11:14:17,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:17,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614778845] [2020-09-25 11:14:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:17,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:17,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:18,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:20,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:22,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 11:14:22,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:14:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:14:22,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:22,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-09-25 11:14:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 11:14:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:22,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:22,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:22,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:14:22,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:22,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:22,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:22,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:22,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 11:14:22,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:22,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:14:22,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:22,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:22,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:22,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:22,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 11:14:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:22,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:22,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:22,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:22,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:14:22,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:22,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:22,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:22,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:14:22,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 11:14:22,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614778845] [2020-09-25 11:14:22,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:22,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:14:22,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723164253] [2020-09-25 11:14:22,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:14:22,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:22,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:14:22,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:22,612 INFO L87 Difference]: Start difference. First operand 1487 states and 1737 transitions. Second operand 6 states. [2020-09-25 11:14:25,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:25,502 INFO L93 Difference]: Finished difference Result 4760 states and 5774 transitions. [2020-09-25 11:14:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:14:25,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2020-09-25 11:14:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:25,533 INFO L225 Difference]: With dead ends: 4760 [2020-09-25 11:14:25,533 INFO L226 Difference]: Without dead ends: 3297 [2020-09-25 11:14:25,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:14:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2020-09-25 11:14:25,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 2369. [2020-09-25 11:14:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2369 states. [2020-09-25 11:14:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2369 states to 2369 states and 2856 transitions. [2020-09-25 11:14:25,641 INFO L78 Accepts]: Start accepts. Automaton has 2369 states and 2856 transitions. Word has length 203 [2020-09-25 11:14:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:25,642 INFO L479 AbstractCegarLoop]: Abstraction has 2369 states and 2856 transitions. [2020-09-25 11:14:25,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:14:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2369 states and 2856 transitions. [2020-09-25 11:14:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 11:14:25,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:25,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-09-25 11:14:25,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:14:25,656 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:25,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:25,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1551654413, now seen corresponding path program 1 times [2020-09-25 11:14:25,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:25,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397757472] [2020-09-25 11:14:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:25,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking...