/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:33,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:33,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:33,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:33,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:33,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:33,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:33,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:33,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:33,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:33,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:33,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:33,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:33,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:33,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:33,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:33,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:33,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:33,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:33,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:33,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:33,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:33,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:33,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:33,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:33,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:33,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:33,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:33,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:33,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:33,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:33,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:33,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:33,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:33,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:33,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:33,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:33,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:33,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:33,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:33,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:33,852 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 [2020-09-24 21:46:33,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:33,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:33,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:33,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:33,881 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:33,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:33,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:33,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:33,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:33,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:33,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:33,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:33,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:33,883 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:33,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:33,883 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:33,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:33,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:33,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:33,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:33,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:33,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:33,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:33,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:33,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:33,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:33,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:33,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:33,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:33,886 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:46:34,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:34,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:34,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:34,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:34,378 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:34,380 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-24 21:46:34,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b6e26a56/8bedd2b8821848bc9ba00f73f08bc0a5/FLAG1a608972d [2020-09-24 21:46:35,175 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:35,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label36.c [2020-09-24 21:46:35,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b6e26a56/8bedd2b8821848bc9ba00f73f08bc0a5/FLAG1a608972d [2020-09-24 21:46:35,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b6e26a56/8bedd2b8821848bc9ba00f73f08bc0a5 [2020-09-24 21:46:35,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:35,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:35,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:35,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:35,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:35,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:35" (1/1) ... [2020-09-24 21:46:35,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:35, skipping insertion in model container [2020-09-24 21:46:35,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:35" (1/1) ... [2020-09-24 21:46:35,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:35,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:36,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:36,055 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:36,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:36,396 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:36,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36 WrapperNode [2020-09-24 21:46:36,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:36,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:36,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:36,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:36,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (1/1) ... [2020-09-24 21:46:36,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (1/1) ... [2020-09-24 21:46:36,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (1/1) ... [2020-09-24 21:46:36,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (1/1) ... [2020-09-24 21:46:36,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (1/1) ... [2020-09-24 21:46:36,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (1/1) ... [2020-09-24 21:46:36,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (1/1) ... [2020-09-24 21:46:36,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:36,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:36,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:36,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:36,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (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 [2020-09-24 21:46:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:36,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:36,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:38,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:38,512 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:38,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:38 BoogieIcfgContainer [2020-09-24 21:46:38,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:38,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:38,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:38,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:38,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:35" (1/3) ... [2020-09-24 21:46:38,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b2832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:38, skipping insertion in model container [2020-09-24 21:46:38,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:36" (2/3) ... [2020-09-24 21:46:38,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621b2832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:38, skipping insertion in model container [2020-09-24 21:46:38,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:38" (3/3) ... [2020-09-24 21:46:38,535 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label36.c [2020-09-24 21:46:38,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:38,561 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:38,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:38,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:38,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:38,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:38,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:38,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:38,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:38,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:38,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:38,666 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-24 21:46:38,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 21:46:38,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:38,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:38,681 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:38,690 INFO L82 PathProgramCache]: Analyzing trace with hash -4985686, now seen corresponding path program 1 times [2020-09-24 21:46:38,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:38,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127539131] [2020-09-24 21:46:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:39,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:39,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:39,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 21:46:39,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:39,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-09-24 21:46:39,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 21:46:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:46:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:39,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:39,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:39,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:39,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:46:39,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:39,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:39,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:39,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127539131] [2020-09-24 21:46:39,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:39,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:46:39,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398734691] [2020-09-24 21:46:39,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:46:39,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:46:39,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:46:39,866 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-24 21:46:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:42,735 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-24 21:46:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:46:42,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-24 21:46:42,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:42,765 INFO L225 Difference]: With dead ends: 1656 [2020-09-24 21:46:42,766 INFO L226 Difference]: Without dead ends: 920 [2020-09-24 21:46:42,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:46:42,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-24 21:46:42,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-24 21:46:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-24 21:46:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-24 21:46:42,898 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 67 [2020-09-24 21:46:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:42,899 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-24 21:46:42,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:46:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-24 21:46:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 21:46:42,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:42,910 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:42,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:42,910 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:42,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:42,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1033084141, now seen corresponding path program 1 times [2020-09-24 21:46:42,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:42,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [980704795] [2020-09-24 21:46:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:47,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-24 21:46:47,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:47,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-24 21:46:47,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:46:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 21:46:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:48,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:48,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:48,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:48,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:48,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:48,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 21:46:48,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:48,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:48,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:48,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:48,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:48,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:48,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:48,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:48,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:48,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 21:46:48,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:48,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:48,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [980704795] [2020-09-24 21:46:48,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:48,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:48,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656455418] [2020-09-24 21:46:48,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:48,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:48,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:48,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:48,471 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 7 states. [2020-09-24 21:46:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:51,726 INFO L93 Difference]: Finished difference Result 2051 states and 2571 transitions. [2020-09-24 21:46:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:46:51,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-09-24 21:46:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:51,735 INFO L225 Difference]: With dead ends: 2051 [2020-09-24 21:46:51,736 INFO L226 Difference]: Without dead ends: 1260 [2020-09-24 21:46:51,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:51,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2020-09-24 21:46:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1196. [2020-09-24 21:46:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1196 states. [2020-09-24 21:46:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1457 transitions. [2020-09-24 21:46:51,792 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1457 transitions. Word has length 146 [2020-09-24 21:46:51,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:51,793 INFO L479 AbstractCegarLoop]: Abstraction has 1196 states and 1457 transitions. [2020-09-24 21:46:51,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:51,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1457 transitions. [2020-09-24 21:46:51,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-24 21:46:51,799 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:51,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:51,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:51,800 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:51,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:51,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1169132927, now seen corresponding path program 1 times [2020-09-24 21:46:51,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:51,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078432116] [2020-09-24 21:46:51,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:51,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-24 21:46:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3816 [2020-09-24 21:46:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:46:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:46:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 21:46:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:55,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:55,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:55,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:55,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:55,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:55,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:46:55,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:46:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:55,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:56,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:56,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:46:56,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-24 21:46:56,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:46:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:56,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:46:56,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:56,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078432116] [2020-09-24 21:46:56,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:56,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:46:56,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169174342] [2020-09-24 21:46:56,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:46:56,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:46:56,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:46:56,267 INFO L87 Difference]: Start difference. First operand 1196 states and 1457 transitions. Second operand 11 states. [2020-09-24 21:46:59,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:59,933 INFO L93 Difference]: Finished difference Result 2806 states and 3435 transitions. [2020-09-24 21:46:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:59,934 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-09-24 21:46:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:59,942 INFO L225 Difference]: With dead ends: 2806 [2020-09-24 21:46:59,943 INFO L226 Difference]: Without dead ends: 1625 [2020-09-24 21:46:59,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-09-24 21:46:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1610. [2020-09-24 21:46:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2020-09-24 21:47:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1901 transitions. [2020-09-24 21:47:00,000 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1901 transitions. Word has length 149 [2020-09-24 21:47:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:00,001 INFO L479 AbstractCegarLoop]: Abstraction has 1610 states and 1901 transitions. [2020-09-24 21:47:00,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:47:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1901 transitions. [2020-09-24 21:47:00,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 21:47:00,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:00,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:47:00,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:47:00,006 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:00,007 INFO L82 PathProgramCache]: Analyzing trace with hash 52087155, now seen corresponding path program 1 times [2020-09-24 21:47:00,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:00,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602497185] [2020-09-24 21:47:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:05,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:05,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 21:47:05,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:47:05,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:47:05,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:05,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:47:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:47:05,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 21:47:05,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:05,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:05,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:05,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:05,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:05,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:47:05,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:05,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:05,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:47:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:05,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:05,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:05,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 21:47:05,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-24 21:47:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:47:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-24 21:47:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:05,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-24 21:47:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:05,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:05,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:05,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:47:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-24 21:47:05,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:05,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:05,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:47:05,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:06,659 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:47:06,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602497185] [2020-09-24 21:47:06,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:06,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:47:06,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631497613] [2020-09-24 21:47:06,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:47:06,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:06,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:47:06,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:47:06,667 INFO L87 Difference]: Start difference. First operand 1610 states and 1901 transitions. Second operand 12 states. [2020-09-24 21:47:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:14,053 INFO L93 Difference]: Finished difference Result 3129 states and 3727 transitions. [2020-09-24 21:47:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 21:47:14,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 243 [2020-09-24 21:47:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:14,063 INFO L225 Difference]: With dead ends: 3129 [2020-09-24 21:47:14,063 INFO L226 Difference]: Without dead ends: 1654 [2020-09-24 21:47:14,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:47:14,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1654 states. [2020-09-24 21:47:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1654 to 1584. [2020-09-24 21:47:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-09-24 21:47:14,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 1861 transitions. [2020-09-24 21:47:14,110 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 1861 transitions. Word has length 243 [2020-09-24 21:47:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:14,111 INFO L479 AbstractCegarLoop]: Abstraction has 1584 states and 1861 transitions. [2020-09-24 21:47:14,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:47:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 1861 transitions. [2020-09-24 21:47:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-24 21:47:14,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:14,114 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:47:14,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:47:14,115 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash -941197245, now seen corresponding path program 1 times [2020-09-24 21:47:14,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:14,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962585739] [2020-09-24 21:47:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:14,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:15,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:19,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:19,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-24 21:47:19,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:47:19,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 21:47:19,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:47:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 21:47:19,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-09-24 21:47:19,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:19,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:19,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:19,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:19,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:47:19,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:47:19,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:19,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:19,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:19,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:19,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-24 21:47:19,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:19,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-24 21:47:19,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-24 21:47:19,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:19,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 21:47:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:19,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:47:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 21:47:19,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:47:19,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:19,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:47:19,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 105 proven. 68 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:47:20,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962585739] [2020-09-24 21:47:20,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:20,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:47:20,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683054112] [2020-09-24 21:47:20,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:47:20,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:20,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:47:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:47:20,203 INFO L87 Difference]: Start difference. First operand 1584 states and 1861 transitions. Second operand 9 states.