/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=0.3 --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/Problem10_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:27:45,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:27:45,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:27:45,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:27:45,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:27:45,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:27:45,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:27:45,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:27:45,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:27:45,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:27:45,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:27:45,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:27:45,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:27:45,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:27:45,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:27:45,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:27:45,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:27:45,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:27:45,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:27:45,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:27:45,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:27:45,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:27:45,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:27:45,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:27:45,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:27:45,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:27:45,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:27:45,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:27:45,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:27:45,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:27:45,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:27:45,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:27:45,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:27:45,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:27:45,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:27:45,691 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:27:45,692 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:27:45,692 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:27:45,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:27:45,693 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:27:45,694 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:27:45,695 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 12:27:45,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:27:45,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:27:45,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:27:45,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:27:45,725 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:27:45,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:27:45,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:27:45,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:27:45,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:27:45,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:27:45,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:27:45,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:27:45,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:27:45,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:27:45,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:27:45,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:27:45,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:27:45,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:27:45,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:27:45,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:27:45,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:27:45,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:27:45,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:27:45,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:27:45,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:27:45,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:27:45,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:27:45,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:27:45,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:27:45,730 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:27:46,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:27:46,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:27:46,271 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:27:46,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:27:46,273 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:27:46,274 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 12:27:46,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6bf928a4/488a3eb352d44963a0fd5ab2a4028108/FLAG99d95d3e4 [2020-09-25 12:27:46,949 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:27:46,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-25 12:27:46,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6bf928a4/488a3eb352d44963a0fd5ab2a4028108/FLAG99d95d3e4 [2020-09-25 12:27:47,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f6bf928a4/488a3eb352d44963a0fd5ab2a4028108 [2020-09-25 12:27:47,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:27:47,232 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:27:47,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:47,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:27:47,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:27:47,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:47" (1/1) ... [2020-09-25 12:27:47,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41395291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:47, skipping insertion in model container [2020-09-25 12:27:47,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:27:47" (1/1) ... [2020-09-25 12:27:47,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:27:47,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:27:47,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:47,865 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:27:48,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:27:48,157 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:27:48,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48 WrapperNode [2020-09-25 12:27:48,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:27:48,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:27:48,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:27:48,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:27:48,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (1/1) ... [2020-09-25 12:27:48,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (1/1) ... [2020-09-25 12:27:48,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (1/1) ... [2020-09-25 12:27:48,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (1/1) ... [2020-09-25 12:27:48,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (1/1) ... [2020-09-25 12:27:48,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (1/1) ... [2020-09-25 12:27:48,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (1/1) ... [2020-09-25 12:27:48,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:27:48,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:27:48,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:27:48,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:27:48,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (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 12:27:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:27:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:27:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:27:48,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:27:48,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:27:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:27:48,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:27:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:27:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:27:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:27:48,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:27:49,797 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:27:49,798 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:27:49,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:49 BoogieIcfgContainer [2020-09-25 12:27:49,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:27:49,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:27:49,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:27:49,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:27:49,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:27:47" (1/3) ... [2020-09-25 12:27:49,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:49, skipping insertion in model container [2020-09-25 12:27:49,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:27:48" (2/3) ... [2020-09-25 12:27:49,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a715b42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:27:49, skipping insertion in model container [2020-09-25 12:27:49,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:27:49" (3/3) ... [2020-09-25 12:27:49,818 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-25 12:27:49,832 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:27:49,847 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:27:49,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:27:49,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:27:49,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:27:49,910 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:27:49,910 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:27:49,910 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:27:49,911 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:27:49,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:27:49,911 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:27:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:27:49,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 12:27:49,952 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:49,954 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] [2020-09-25 12:27:49,954 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:49,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:49,962 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-25 12:27:49,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:49,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484036615] [2020-09-25 12:27:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:50,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:50,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:27:50,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:27:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-09-25 12:27:50,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:50,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:50,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:27:50,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:27:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:50,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:51,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:27:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:51,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:51,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:51,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:51,031 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 12:27:51,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484036615] [2020-09-25 12:27:51,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:51,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:27:51,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383805900] [2020-09-25 12:27:51,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:27:51,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:27:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:27:51,067 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:27:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:53,208 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 12:27:53,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:27:53,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-25 12:27:53,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:53,256 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 12:27:53,257 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 12:27:53,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 12:27:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 12:27:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 12:27:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 12:27:53,358 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 37 [2020-09-25 12:27:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:53,358 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 12:27:53,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:27:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 12:27:53,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 12:27:53,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:53,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:53,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:27:53,366 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:53,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:53,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109808, now seen corresponding path program 1 times [2020-09-25 12:27:53,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:53,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464234452] [2020-09-25 12:27:53,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-25 12:27:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4458 [2020-09-25 12:27:57,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:27:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:27:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 12:27:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:57,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:57,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:57,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:27:57,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:57,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:58,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:27:58,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:58,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:58,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:58,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:58,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:27:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 12:27:58,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:58,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:27:58,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:27:58,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464234452] [2020-09-25 12:27:58,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:58,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:27:58,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534589782] [2020-09-25 12:27:58,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:27:58,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:58,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:27:58,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:27:58,304 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 12:27:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:59,947 INFO L93 Difference]: Finished difference Result 698 states and 888 transitions. [2020-09-25 12:27:59,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:27:59,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-25 12:27:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:59,954 INFO L225 Difference]: With dead ends: 698 [2020-09-25 12:27:59,955 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 12:27:59,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:27:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 12:27:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2020-09-25 12:27:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-09-25 12:27:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 886 transitions. [2020-09-25 12:27:59,996 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 886 transitions. Word has length 116 [2020-09-25 12:27:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:59,997 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 886 transitions. [2020-09-25 12:27:59,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:27:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 886 transitions. [2020-09-25 12:28:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 12:28:00,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:00,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:00,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:00,003 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:00,004 INFO L82 PathProgramCache]: Analyzing trace with hash 804111666, now seen corresponding path program 1 times [2020-09-25 12:28:00,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:00,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549617562] [2020-09-25 12:28:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:00,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:02,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:02,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 12:28:02,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:28:02,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2923 [2020-09-25 12:28:02,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:02,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 12:28:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:03,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:03,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:03,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:03,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:28:03,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:03,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:03,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:03,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:03,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:03,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:03,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:03,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:03,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 12:28:03,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:03,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:03,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:03,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:03,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:03,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:03,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549617562] [2020-09-25 12:28:03,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:03,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:03,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71262604] [2020-09-25 12:28:03,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:03,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:03,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:03,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:03,320 INFO L87 Difference]: Start difference. First operand 696 states and 886 transitions. Second operand 8 states. [2020-09-25 12:28:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:06,731 INFO L93 Difference]: Finished difference Result 1653 states and 2185 transitions. [2020-09-25 12:28:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:06,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-09-25 12:28:06,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:06,749 INFO L225 Difference]: With dead ends: 1653 [2020-09-25 12:28:06,749 INFO L226 Difference]: Without dead ends: 1123 [2020-09-25 12:28:06,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-09-25 12:28:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 890. [2020-09-25 12:28:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-09-25 12:28:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1119 transitions. [2020-09-25 12:28:06,813 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1119 transitions. Word has length 126 [2020-09-25 12:28:06,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:06,816 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1119 transitions. [2020-09-25 12:28:06,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1119 transitions. [2020-09-25 12:28:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 12:28:06,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:06,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:06,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:06,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:06,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash -844817794, now seen corresponding path program 1 times [2020-09-25 12:28:06,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:06,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140583538] [2020-09-25 12:28:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:06,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:07,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 12:28:10,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3563 [2020-09-25 12:28:10,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:28:10,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:10,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:28:10,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:10,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:10,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:10,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:10,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:10,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:28:10,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:10,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 12:28:10,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:10,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:10,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:28:10,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:10,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140583538] [2020-09-25 12:28:10,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:10,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:10,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936013982] [2020-09-25 12:28:10,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:10,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:10,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:10,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:10,934 INFO L87 Difference]: Start difference. First operand 890 states and 1119 transitions. Second operand 7 states. [2020-09-25 12:28:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:13,149 INFO L93 Difference]: Finished difference Result 2289 states and 3010 transitions. [2020-09-25 12:28:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:13,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-09-25 12:28:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:13,164 INFO L225 Difference]: With dead ends: 2289 [2020-09-25 12:28:13,165 INFO L226 Difference]: Without dead ends: 1414 [2020-09-25 12:28:13,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 12:28:13,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-09-25 12:28:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1196. [2020-09-25 12:28:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-25 12:28:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1446 transitions. [2020-09-25 12:28:13,230 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1446 transitions. Word has length 145 [2020-09-25 12:28:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:13,231 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1446 transitions. [2020-09-25 12:28:13,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1446 transitions. [2020-09-25 12:28:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 12:28:13,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:13,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:13,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:13,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:13,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:13,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1096000346, now seen corresponding path program 1 times [2020-09-25 12:28:13,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:13,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381811941] [2020-09-25 12:28:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:13,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:14,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:17,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 12:28:17,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:17,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4085 [2020-09-25 12:28:17,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:17,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:17,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:28:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 16 [2020-09-25 12:28:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:17,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:17,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:17,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:28:17,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:17,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:17,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:28:17,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:17,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 12:28:17,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:17,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 12:28:17,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:17,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:17,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 12:28:17,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:17,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381811941] [2020-09-25 12:28:17,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:17,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:28:17,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621838356] [2020-09-25 12:28:17,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:17,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:17,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:17,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:17,993 INFO L87 Difference]: Start difference. First operand 1196 states and 1446 transitions. Second operand 8 states. [2020-09-25 12:28:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:20,381 INFO L93 Difference]: Finished difference Result 2696 states and 3372 transitions. [2020-09-25 12:28:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:28:20,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 12:28:20,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:20,393 INFO L225 Difference]: With dead ends: 2696 [2020-09-25 12:28:20,393 INFO L226 Difference]: Without dead ends: 1678 [2020-09-25 12:28:20,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:28:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-25 12:28:20,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1668. [2020-09-25 12:28:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1668 states. [2020-09-25 12:28:20,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 1997 transitions. [2020-09-25 12:28:20,458 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 1997 transitions. Word has length 169 [2020-09-25 12:28:20,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:20,459 INFO L479 AbstractCegarLoop]: Abstraction has 1668 states and 1997 transitions. [2020-09-25 12:28:20,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:20,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 1997 transitions. [2020-09-25 12:28:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 12:28:20,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:20,464 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:28:20,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:20,464 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:20,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1639632703, now seen corresponding path program 1 times [2020-09-25 12:28:20,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:20,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997719296] [2020-09-25 12:28:20,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 12:28:25,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:28:25,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 12:28:25,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:28:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:28:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:28:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:25,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:25,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:28:25,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:28:25,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:25,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:25,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 12:28:25,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:25,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:28:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:28:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:26,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:26,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:26,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 12:28:26,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:26,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:26,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:26,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:28:26,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:26,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997719296] [2020-09-25 12:28:26,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:26,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:28:26,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825841755] [2020-09-25 12:28:26,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:28:26,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:26,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:28:26,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:26,347 INFO L87 Difference]: Start difference. First operand 1668 states and 1997 transitions. Second operand 10 states. [2020-09-25 12:28:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:29,029 INFO L93 Difference]: Finished difference Result 3269 states and 4055 transitions. [2020-09-25 12:28:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:28:29,030 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-09-25 12:28:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:29,042 INFO L225 Difference]: With dead ends: 3269 [2020-09-25 12:28:29,042 INFO L226 Difference]: Without dead ends: 2251 [2020-09-25 12:28:29,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:28:29,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2020-09-25 12:28:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2200. [2020-09-25 12:28:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-25 12:28:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2628 transitions. [2020-09-25 12:28:29,111 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2628 transitions. Word has length 205 [2020-09-25 12:28:29,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:29,112 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 2628 transitions. [2020-09-25 12:28:29,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:28:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2628 transitions. [2020-09-25 12:28:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 12:28:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:29,116 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:28:29,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:28:29,116 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:29,117 INFO L82 PathProgramCache]: Analyzing trace with hash 785034117, now seen corresponding path program 1 times [2020-09-25 12:28:29,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:29,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015609559] [2020-09-25 12:28:29,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:29,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:30,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking...