/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:26:27,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:26:27,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:26:27,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:26:27,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:26:27,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:26:27,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:26:27,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:26:27,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:26:27,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:26:27,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:26:27,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:26:27,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:26:27,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:26:27,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:26:27,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:26:27,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:26:27,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:26:27,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:26:27,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:26:27,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:26:27,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:26:27,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:26:27,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:26:27,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:26:27,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:26:27,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:26:27,540 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:26:27,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:26:27,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:26:27,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:26:27,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:26:27,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:26:27,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:26:27,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:26:27,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:26:27,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:26:27,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:26:27,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:26:27,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:26:27,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:26:27,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:26:27,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:26:27,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:26:27,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:26:27,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:26:27,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:26:27,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:26:27,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:26:27,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:26:27,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:26:27,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:26:27,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:26:27,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:26:27,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:26:27,620 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:26:27,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:26:27,620 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:26:27,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:26:27,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:26:27,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:26:27,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:26:27,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:26:27,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:26:27,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:26:27,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:26:27,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:26:27,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:26:27,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:26:27,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:26:27,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:26:27,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:26:27,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:26:28,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:26:28,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:26:28,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:26:28,029 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:26:28,031 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-14 21:26:28,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce2560ee7/af879e5550ec4a27b24b96bdb9b3e961/FLAG6d78a6a8a [2020-10-14 21:26:29,124 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:26:29,125 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label21.c [2020-10-14 21:26:29,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce2560ee7/af879e5550ec4a27b24b96bdb9b3e961/FLAG6d78a6a8a [2020-10-14 21:26:29,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce2560ee7/af879e5550ec4a27b24b96bdb9b3e961 [2020-10-14 21:26:29,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:26:29,573 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:26:29,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:26:29,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:26:29,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:26:29,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:29" (1/1) ... [2020-10-14 21:26:29,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47a8d835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:29, skipping insertion in model container [2020-10-14 21:26:29,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:26:29" (1/1) ... [2020-10-14 21:26:29,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:26:29,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:26:31,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:31,794 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:26:32,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:26:32,730 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:26:32,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32 WrapperNode [2020-10-14 21:26:32,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:26:32,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:26:32,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:26:32,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:26:32,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... [2020-10-14 21:26:32,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... [2020-10-14 21:26:32,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... [2020-10-14 21:26:32,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... [2020-10-14 21:26:33,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... [2020-10-14 21:26:33,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... [2020-10-14 21:26:33,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... [2020-10-14 21:26:33,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:26:33,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:26:33,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:26:33,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:26:33,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:26:33,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:26:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:26:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:26:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:26:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:26:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:26:33,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:26:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:26:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:26:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:26:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:26:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:26:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:26:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:26:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:26:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:26:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:26:45,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:26:45,102 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:26:45,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:45 BoogieIcfgContainer [2020-10-14 21:26:45,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:26:45,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:26:45,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:26:45,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:26:45,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:26:29" (1/3) ... [2020-10-14 21:26:45,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62aa292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:45, skipping insertion in model container [2020-10-14 21:26:45,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:26:32" (2/3) ... [2020-10-14 21:26:45,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62aa292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:26:45, skipping insertion in model container [2020-10-14 21:26:45,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:26:45" (3/3) ... [2020-10-14 21:26:45,138 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label21.c [2020-10-14 21:26:45,151 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:26:45,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:26:45,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:26:45,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:26:45,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:26:45,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:26:45,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:26:45,212 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:26:45,212 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:26:45,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:26:45,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:26:45,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:26:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 21:26:45,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:26:45,272 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] [2020-10-14 21:26:45,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:26:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:26:45,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1283196489, now seen corresponding path program 1 times [2020-10-14 21:26:45,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:26:45,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253667985] [2020-10-14 21:26:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:26:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:45,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 21:26:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-14 21:26:46,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:46,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:26:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:26:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 21:26:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:26:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:26:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:26:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:26:46,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:26:46,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:26:46,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:26:46,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:26:46,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:26:46,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:26:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:26:46,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:26:46,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:26:46,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:26:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:26:46,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253667985] [2020-10-14 21:26:46,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:26:46,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:26:46,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784831013] [2020-10-14 21:26:46,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:26:46,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:26:46,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:26:46,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:26:46,325 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:27:08,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:08,602 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 21:27:08,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:27:08,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-14 21:27:08,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:08,650 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 21:27:08,650 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 21:27:08,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:27:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 21:27:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 21:27:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 21:27:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 21:27:08,820 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 26 [2020-10-14 21:27:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:08,821 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 21:27:08,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:27:08,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 21:27:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 21:27:08,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:08,827 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:27:08,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:27:08,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:08,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:08,828 INFO L82 PathProgramCache]: Analyzing trace with hash -568040722, now seen corresponding path program 1 times [2020-10-14 21:27:08,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:08,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180816248] [2020-10-14 21:27:08,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:09,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:10,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:10,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:27:10,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:10,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-14 21:27:10,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:10,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:27:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:27:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:27:10,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:10,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:10,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:10,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:10,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:10,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:27:10,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:10,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:10,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:10,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:10,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:10,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:10,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:10,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:27:10,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:10,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 21:27:10,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:10,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:10,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:27:10,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:27:10,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180816248] [2020-10-14 21:27:10,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:27:10,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:27:10,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225326749] [2020-10-14 21:27:10,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:10,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:10,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:10,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:10,738 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-14 21:27:41,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:27:41,236 INFO L93 Difference]: Finished difference Result 5689 states and 9345 transitions. [2020-10-14 21:27:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:27:41,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-14 21:27:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:27:41,264 INFO L225 Difference]: With dead ends: 5689 [2020-10-14 21:27:41,265 INFO L226 Difference]: Without dead ends: 3810 [2020-10-14 21:27:41,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:27:41,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3810 states. [2020-10-14 21:27:41,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3810 to 3711. [2020-10-14 21:27:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3711 states. [2020-10-14 21:27:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3711 states to 3711 states and 5582 transitions. [2020-10-14 21:27:41,400 INFO L78 Accepts]: Start accepts. Automaton has 3711 states and 5582 transitions. Word has length 96 [2020-10-14 21:27:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:27:41,401 INFO L479 AbstractCegarLoop]: Abstraction has 3711 states and 5582 transitions. [2020-10-14 21:27:41,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:27:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3711 states and 5582 transitions. [2020-10-14 21:27:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 21:27:41,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:27:41,404 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:27:41,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:27:41,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:27:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:27:41,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1172180461, now seen corresponding path program 1 times [2020-10-14 21:27:41,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:27:41,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890372642] [2020-10-14 21:27:41,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:27:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:41,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:42,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:27:42,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:27:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-14 21:27:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:27:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:27:42,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:27:42,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:42,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:27:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:42,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:42,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:27:42,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:42,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 21:27:42,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:42,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:27:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:27:42,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:27:42,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:27:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:27:42,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:27:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:27:42,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:27:42,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:27:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-14 21:27:42,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:27:42,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:27:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:27:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:27:42,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:27:42,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:27:42,994 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:27:42,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890372642] [2020-10-14 21:27:42,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:27:42,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:27:42,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74021080] [2020-10-14 21:27:42,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:27:42,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:27:42,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:27:42,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:27:42,999 INFO L87 Difference]: Start difference. First operand 3711 states and 5582 transitions. Second operand 7 states. [2020-10-14 21:28:14,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:14,075 INFO L93 Difference]: Finished difference Result 8469 states and 13141 transitions. [2020-10-14 21:28:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:28:14,076 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-14 21:28:14,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:14,106 INFO L225 Difference]: With dead ends: 8469 [2020-10-14 21:28:14,106 INFO L226 Difference]: Without dead ends: 4764 [2020-10-14 21:28:14,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:28:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4764 states. [2020-10-14 21:28:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4764 to 4552. [2020-10-14 21:28:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4552 states. [2020-10-14 21:28:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 6191 transitions. [2020-10-14 21:28:14,266 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 6191 transitions. Word has length 101 [2020-10-14 21:28:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:14,267 INFO L479 AbstractCegarLoop]: Abstraction has 4552 states and 6191 transitions. [2020-10-14 21:28:14,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:28:14,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 6191 transitions. [2020-10-14 21:28:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 21:28:14,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:14,277 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:28:14,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:28:14,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:14,278 INFO L82 PathProgramCache]: Analyzing trace with hash -267890033, now seen corresponding path program 1 times [2020-10-14 21:28:14,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:14,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522196534] [2020-10-14 21:28:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:14,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:14,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 21:28:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:28:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 21:28:15,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:15,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:28:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:28:15,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:28:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:28:15,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:15,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:15,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:15,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:28:15,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:15,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:15,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:28:15,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:28:15,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:15,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:15,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:28:15,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:15,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 21:28:15,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:15,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:28:15,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:28:15,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:28:15,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522196534] [2020-10-14 21:28:15,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:28:15,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:28:15,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109362955] [2020-10-14 21:28:15,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:28:15,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:15,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:28:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:28:15,588 INFO L87 Difference]: Start difference. First operand 4552 states and 6191 transitions. Second operand 8 states. [2020-10-14 21:28:46,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:28:46,712 INFO L93 Difference]: Finished difference Result 15256 states and 21818 transitions. [2020-10-14 21:28:46,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:28:46,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-14 21:28:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:28:46,769 INFO L225 Difference]: With dead ends: 15256 [2020-10-14 21:28:46,770 INFO L226 Difference]: Without dead ends: 10710 [2020-10-14 21:28:46,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:28:46,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2020-10-14 21:28:47,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 10624. [2020-10-14 21:28:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10624 states. [2020-10-14 21:28:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10624 states to 10624 states and 14091 transitions. [2020-10-14 21:28:47,123 INFO L78 Accepts]: Start accepts. Automaton has 10624 states and 14091 transitions. Word has length 103 [2020-10-14 21:28:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:28:47,124 INFO L479 AbstractCegarLoop]: Abstraction has 10624 states and 14091 transitions. [2020-10-14 21:28:47,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:28:47,124 INFO L276 IsEmpty]: Start isEmpty. Operand 10624 states and 14091 transitions. [2020-10-14 21:28:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-14 21:28:47,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:28:47,139 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:28:47,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:28:47,139 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:28:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:28:47,140 INFO L82 PathProgramCache]: Analyzing trace with hash 668051264, now seen corresponding path program 1 times [2020-10-14 21:28:47,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:28:47,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024023830] [2020-10-14 21:28:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:28:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:47,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:47,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 21:28:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-14 21:28:47,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:47,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:28:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:28:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 21:28:47,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:47,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:28:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:47,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:47,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:28:47,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:28:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:47,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:28:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:28:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:47,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:28:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:28:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:28:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:28:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:28:47,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:28:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:28:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:28:47,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:28:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:28:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:28:47,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:28:47,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:28:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:28:48,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024023830] [2020-10-14 21:28:48,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:28:48,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:28:48,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500677409] [2020-10-14 21:28:48,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:28:48,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:28:48,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:28:48,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:28:48,067 INFO L87 Difference]: Start difference. First operand 10624 states and 14091 transitions. Second operand 5 states. [2020-10-14 21:29:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:14,341 INFO L93 Difference]: Finished difference Result 22945 states and 31894 transitions. [2020-10-14 21:29:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:29:14,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-14 21:29:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:14,391 INFO L225 Difference]: With dead ends: 22945 [2020-10-14 21:29:14,391 INFO L226 Difference]: Without dead ends: 13130 [2020-10-14 21:29:14,413 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 [2020-10-14 21:29:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13130 states. [2020-10-14 21:29:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13130 to 13031. [2020-10-14 21:29:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13031 states. [2020-10-14 21:29:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13031 states to 13031 states and 17218 transitions. [2020-10-14 21:29:14,735 INFO L78 Accepts]: Start accepts. Automaton has 13031 states and 17218 transitions. Word has length 155 [2020-10-14 21:29:14,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:14,738 INFO L479 AbstractCegarLoop]: Abstraction has 13031 states and 17218 transitions. [2020-10-14 21:29:14,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:29:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13031 states and 17218 transitions. [2020-10-14 21:29:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-14 21:29:14,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:14,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:29:14,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:29:14,747 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1545352809, now seen corresponding path program 1 times [2020-10-14 21:29:14,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:14,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436331057] [2020-10-14 21:29:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:14,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:15,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:18,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:18,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-14 21:29:18,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:29:18,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3474 [2020-10-14 21:29:18,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:18,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:18,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:29:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-14 21:29:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:18,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:18,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:18,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:18,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:18,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:18,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:29:18,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:18,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:18,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:18,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:18,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:18,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:18,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:18,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:29:18,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:18,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 21:29:18,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:18,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:18,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:18,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 21:29:18,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:18,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:29:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:19,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:29:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 21:29:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:19,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:29:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-14 21:29:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:29:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 38 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:29:19,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436331057] [2020-10-14 21:29:19,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:19,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:29:19,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9868446] [2020-10-14 21:29:19,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:19,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:19,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:19,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:19,123 INFO L87 Difference]: Start difference. First operand 13031 states and 17218 transitions. Second operand 7 states. [2020-10-14 21:29:51,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:29:51,522 INFO L93 Difference]: Finished difference Result 25749 states and 34551 transitions. [2020-10-14 21:29:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:29:51,531 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-10-14 21:29:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:29:51,595 INFO L225 Difference]: With dead ends: 25749 [2020-10-14 21:29:51,595 INFO L226 Difference]: Without dead ends: 13527 [2020-10-14 21:29:51,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:29:51,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13527 states. [2020-10-14 21:29:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13527 to 13198. [2020-10-14 21:29:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13198 states. [2020-10-14 21:29:52,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13198 states to 13198 states and 17570 transitions. [2020-10-14 21:29:52,020 INFO L78 Accepts]: Start accepts. Automaton has 13198 states and 17570 transitions. Word has length 196 [2020-10-14 21:29:52,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:29:52,021 INFO L479 AbstractCegarLoop]: Abstraction has 13198 states and 17570 transitions. [2020-10-14 21:29:52,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:29:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 13198 states and 17570 transitions. [2020-10-14 21:29:52,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 21:29:52,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:29:52,026 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:29:52,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:29:52,026 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:29:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:29:52,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1091172398, now seen corresponding path program 1 times [2020-10-14 21:29:52,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:29:52,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556893363] [2020-10-14 21:29:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:29:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:52,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:52,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:53,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:54,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:54,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 21:29:54,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:29:54,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2864 [2020-10-14 21:29:54,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:54,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:29:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:29:54,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-14 21:29:54,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:55,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:29:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:55,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:55,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:29:55,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:55,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:29:55,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:55,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:55,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:29:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:55,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:29:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:55,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:55,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:29:55,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:29:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 21:29:55,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:55,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:29:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:29:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:29:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:55,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:29:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:29:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:29:55,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:29:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:29:55,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:29:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 21:29:55,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:29:55,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:29:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:29:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:29:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:29:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:29:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:29:55,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556893363] [2020-10-14 21:29:55,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:29:55,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:29:55,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619323271] [2020-10-14 21:29:55,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:29:55,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:29:55,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:29:55,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:29:55,872 INFO L87 Difference]: Start difference. First operand 13198 states and 17570 transitions. Second operand 7 states. [2020-10-14 21:30:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:26,816 INFO L93 Difference]: Finished difference Result 36290 states and 51308 transitions. [2020-10-14 21:30:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:30:26,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-14 21:30:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:26,921 INFO L225 Difference]: With dead ends: 36290 [2020-10-14 21:30:26,921 INFO L226 Difference]: Without dead ends: 23093 [2020-10-14 21:30:26,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:30:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23093 states. [2020-10-14 21:30:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23093 to 22905. [2020-10-14 21:30:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22905 states. [2020-10-14 21:30:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22905 states to 22905 states and 30159 transitions. [2020-10-14 21:30:27,591 INFO L78 Accepts]: Start accepts. Automaton has 22905 states and 30159 transitions. Word has length 208 [2020-10-14 21:30:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:27,592 INFO L479 AbstractCegarLoop]: Abstraction has 22905 states and 30159 transitions. [2020-10-14 21:30:27,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:30:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 22905 states and 30159 transitions. [2020-10-14 21:30:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 21:30:27,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:27,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:30:27,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:30:27,597 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:27,598 INFO L82 PathProgramCache]: Analyzing trace with hash 234199782, now seen corresponding path program 1 times [2020-10-14 21:30:27,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:27,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030588455] [2020-10-14 21:30:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:27,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:27,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:28,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 21:30:28,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:28,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-14 21:30:28,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:28,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:28,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 21:30:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:30:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:28,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:28,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:30:28,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:28,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:30:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:30:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:28,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:28,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:28,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:30:28,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:28,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:30:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:28,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:28,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 21:30:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:28,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 21:30:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking...