/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:09:10,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:09:10,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:09:10,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:09:10,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:09:10,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:09:10,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:09:10,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:09:10,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:09:10,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:09:10,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:09:10,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:09:10,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:09:10,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:09:10,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:09:10,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:09:10,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:09:10,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:09:10,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:09:10,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:09:10,545 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:09:10,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:09:10,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:09:10,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:09:10,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:09:10,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:09:10,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:09:10,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:09:10,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:09:10,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:09:10,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:09:10,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:09:10,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:09:10,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:09:10,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:09:10,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:09:10,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:09:10,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:09:10,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:09:10,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:09:10,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:09:10,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:09:10,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:09:10,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:09:10,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:09:10,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:09:10,593 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:09:10,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:09:10,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:09:10,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:09:10,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:09:10,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:09:10,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:09:10,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:09:10,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:09:10,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:09:10,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:09:10,595 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:09:10,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:09:10,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:09:10,596 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:09:10,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:09:10,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:09:10,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:09:10,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:09:10,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:09:10,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:09:10,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:09:10,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:09:10,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:09:10,598 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:09:10,598 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:09:11,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:09:11,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:09:11,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:09:11,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:09:11,125 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:09:11,126 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2020-09-25 09:09:11,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b667b4b8/0ec565a328d14aeb97a240888d81c2e3/FLAG896eeb434 [2020-09-25 09:09:11,732 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:09:11,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2020-09-25 09:09:11,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b667b4b8/0ec565a328d14aeb97a240888d81c2e3/FLAG896eeb434 [2020-09-25 09:09:12,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b667b4b8/0ec565a328d14aeb97a240888d81c2e3 [2020-09-25 09:09:12,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:09:12,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:09:12,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:09:12,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:09:12,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:09:12,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632a6d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12, skipping insertion in model container [2020-09-25 09:09:12,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:09:12,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:09:12,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:09:12,370 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:09:12,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:09:12,409 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:09:12,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12 WrapperNode [2020-09-25 09:09:12,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:09:12,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:09:12,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:09:12,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:09:12,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... [2020-09-25 09:09:12,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:09:12,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:09:12,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:09:12,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:09:12,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:09:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:09:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:09:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:09:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 09:09:12,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:09:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:09:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:09:12,631 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 09:09:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_pointer [2020-09-25 09:09:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 09:09:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 09:09:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 09:09:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:09:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 09:09:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 09:09:12,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 09:09:12,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:09:12,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:09:12,919 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:09:12,919 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 09:09:12,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:09:12 BoogieIcfgContainer [2020-09-25 09:09:12,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:09:12,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:09:12,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:09:12,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:09:12,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:09:12" (1/3) ... [2020-09-25 09:09:12,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:09:12, skipping insertion in model container [2020-09-25 09:09:12,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:09:12" (2/3) ... [2020-09-25 09:09:12,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd1e60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:09:12, skipping insertion in model container [2020-09-25 09:09:12,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:09:12" (3/3) ... [2020-09-25 09:09:12,937 INFO L109 eAbstractionObserver]: Analyzing ICFG flag_loopdep.i [2020-09-25 09:09:12,950 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:09:12,960 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:09:12,983 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:09:13,013 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:09:13,014 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:09:13,014 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:09:13,014 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:09:13,014 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:09:13,014 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:09:13,014 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:09:13,014 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:09:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 09:09:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 09:09:13,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:13,047 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] [2020-09-25 09:09:13,047 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:13,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2004589429, now seen corresponding path program 1 times [2020-09-25 09:09:13,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:13,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106194178] [2020-09-25 09:09:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:13,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:13,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:13,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:09:13,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-09-25 09:09:13,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:13,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:09:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 09:09:13,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 09:09:13,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:09:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:13,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:13,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:13,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:13,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:13,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:09:13,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:13,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:13,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:13,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:13,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:13,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:13,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 09:09:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:13,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:13,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:13,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:13,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:09:13,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106194178] [2020-09-25 09:09:13,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:09:13,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:09:13,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847949624] [2020-09-25 09:09:13,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:09:13,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:13,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:09:13,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:09:13,748 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 5 states. [2020-09-25 09:09:13,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:13,997 INFO L93 Difference]: Finished difference Result 109 states and 134 transitions. [2020-09-25 09:09:13,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:09:14,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 09:09:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:14,015 INFO L225 Difference]: With dead ends: 109 [2020-09-25 09:09:14,016 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 09:09:14,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:09:14,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 09:09:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 09:09:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 09:09:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 09:09:14,082 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 09:09:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:14,083 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 09:09:14,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:09:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 09:09:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 09:09:14,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:14,085 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] [2020-09-25 09:09:14,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:09:14,086 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:14,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:14,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1596363536, now seen corresponding path program 1 times [2020-09-25 09:09:14,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:14,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717631813] [2020-09-25 09:09:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:14,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:15,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:15,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 09:09:15,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:09:15,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1804 [2020-09-25 09:09:15,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:15,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:09:15,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 09:09:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 09:09:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:09:16,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:16,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:16,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:16,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:16,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:09:16,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:16,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:16,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:16,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:16,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:16,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:16,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:16,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:09:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:16,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:16,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:09:16,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717631813] [2020-09-25 09:09:16,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:16,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:09:16,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808025998] [2020-09-25 09:09:16,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:09:16,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:16,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:09:16,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:09:16,210 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 11 states. [2020-09-25 09:09:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:17,030 INFO L93 Difference]: Finished difference Result 101 states and 114 transitions. [2020-09-25 09:09:17,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:09:17,031 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-09-25 09:09:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:17,037 INFO L225 Difference]: With dead ends: 101 [2020-09-25 09:09:17,037 INFO L226 Difference]: Without dead ends: 99 [2020-09-25 09:09:17,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:09:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-25 09:09:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2020-09-25 09:09:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 09:09:17,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-09-25 09:09:17,069 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 36 [2020-09-25 09:09:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:17,070 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-09-25 09:09:17,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:09:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-09-25 09:09:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 09:09:17,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:17,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:09:17,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:09:17,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:17,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:17,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1082881863, now seen corresponding path program 1 times [2020-09-25 09:09:17,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:17,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192229363] [2020-09-25 09:09:17,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:17,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:17,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:17,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:09:17,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:09:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-25 09:09:17,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:17,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:09:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 09:09:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:09:17,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:17,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:17,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:17,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:17,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:09:17,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:17,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:17,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:17,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:17,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:17,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:17,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:17,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:17,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:09:17,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:17,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:17,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:17,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:09:17,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192229363] [2020-09-25 09:09:17,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:17,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:09:17,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102162808] [2020-09-25 09:09:17,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:09:17,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:17,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:09:17,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:09:18,000 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 7 states. [2020-09-25 09:09:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:18,231 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-09-25 09:09:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:09:18,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-25 09:09:18,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:18,235 INFO L225 Difference]: With dead ends: 130 [2020-09-25 09:09:18,235 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 09:09:18,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:09:18,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 09:09:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 81. [2020-09-25 09:09:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 09:09:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-09-25 09:09:18,247 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 37 [2020-09-25 09:09:18,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:18,247 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-09-25 09:09:18,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:09:18,248 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-09-25 09:09:18,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 09:09:18,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:18,250 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:09:18,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:09:18,251 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:18,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:18,251 INFO L82 PathProgramCache]: Analyzing trace with hash -615620904, now seen corresponding path program 1 times [2020-09-25 09:09:18,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:18,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306649252] [2020-09-25 09:09:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:18,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:19,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:19,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 09:09:19,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:09:19,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1186 [2020-09-25 09:09:19,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:19,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:09:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 09:09:19,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:09:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:19,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:19,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:19,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:19,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:19,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:19,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:09:19,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:19,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:19,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:19,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:19,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:19,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:19,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:19,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:19,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 09:09:19,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:19,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:19,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:19,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 09:09:19,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306649252] [2020-09-25 09:09:19,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:09:19,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:09:19,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076467704] [2020-09-25 09:09:19,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:09:19,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:19,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:09:19,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:09:19,545 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand 5 states. [2020-09-25 09:09:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:19,693 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2020-09-25 09:09:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:09:19,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-09-25 09:09:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:19,696 INFO L225 Difference]: With dead ends: 122 [2020-09-25 09:09:19,696 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 09:09:19,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:09:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 09:09:19,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-09-25 09:09:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 09:09:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-09-25 09:09:19,704 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 44 [2020-09-25 09:09:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:19,705 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-09-25 09:09:19,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:09:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-09-25 09:09:19,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 09:09:19,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:19,706 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:09:19,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:09:19,707 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash 243827684, now seen corresponding path program 1 times [2020-09-25 09:09:19,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:19,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513007548] [2020-09-25 09:09:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:19,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:19,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:20,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:23,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:23,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 09:09:23,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:09:23,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4002 [2020-09-25 09:09:23,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:23,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:09:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:09:23,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:09:23,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:09:23,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:23,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:23,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:23,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:23,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:23,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:09:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:23,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:23,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:23,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:23,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:09:23,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:23,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:23,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:23,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:23,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:23,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 09:09:23,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:23,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:09:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:09:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:23,886 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:09:23,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513007548] [2020-09-25 09:09:23,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:09:23,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:09:23,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344099837] [2020-09-25 09:09:23,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:09:23,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:23,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:09:23,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:09:23,889 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 5 states. [2020-09-25 09:09:24,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:24,057 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2020-09-25 09:09:24,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:09:24,058 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-09-25 09:09:24,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:24,059 INFO L225 Difference]: With dead ends: 81 [2020-09-25 09:09:24,059 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 09:09:24,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:09:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 09:09:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-09-25 09:09:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 09:09:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-09-25 09:09:24,067 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 48 [2020-09-25 09:09:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:24,067 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-09-25 09:09:24,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:09:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-09-25 09:09:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 09:09:24,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:24,069 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:09:24,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:09:24,069 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:24,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:24,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1076690953, now seen corresponding path program 1 times [2020-09-25 09:09:24,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:24,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688773656] [2020-09-25 09:09:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:24,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:26,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 09:09:26,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:09:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2173 [2020-09-25 09:09:26,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:26,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:09:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 09:09:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:09:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:26,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:26,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:26,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:26,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:26,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:09:26,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:26,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:26,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:26,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:26,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:26,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:26,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:26,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:09:26,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:26,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:26,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:26,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 09:09:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:26,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:26,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:26,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:26,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:26,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:26,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:26,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:26,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:26,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:09:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 09:09:26,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688773656] [2020-09-25 09:09:26,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:26,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:09:26,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214933662] [2020-09-25 09:09:26,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:09:26,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:26,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:09:26,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:09:26,393 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 9 states. [2020-09-25 09:09:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:26,636 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2020-09-25 09:09:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:09:26,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-09-25 09:09:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:26,641 INFO L225 Difference]: With dead ends: 105 [2020-09-25 09:09:26,641 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 09:09:26,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:09:26,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 09:09:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2020-09-25 09:09:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 09:09:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-09-25 09:09:26,658 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 55 [2020-09-25 09:09:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:26,659 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-09-25 09:09:26,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:09:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-09-25 09:09:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 09:09:26,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:26,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:09:26,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:09:26,663 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:26,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:26,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1652099800, now seen corresponding path program 2 times [2020-09-25 09:09:26,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:26,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398973063] [2020-09-25 09:09:26,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:26,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:30,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:09:30,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:09:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3766 [2020-09-25 09:09:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:30,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:09:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 09:09:30,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:09:30,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:09:30,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:30,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:30,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:30,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:30,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:30,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:30,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:30,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:30,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:30,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:30,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:30,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:30,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:09:30,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:30,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:30,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:30,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:30,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:09:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:30,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:30,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:30,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:30,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:30,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:30,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:09:30,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 09:09:30,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398973063] [2020-09-25 09:09:30,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:30,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:09:30,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29657749] [2020-09-25 09:09:30,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:09:30,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:30,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:09:30,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:09:30,593 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 11 states. [2020-09-25 09:09:30,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:30,823 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-25 09:09:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:09:30,824 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2020-09-25 09:09:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:30,825 INFO L225 Difference]: With dead ends: 112 [2020-09-25 09:09:30,825 INFO L226 Difference]: Without dead ends: 89 [2020-09-25 09:09:30,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 09:09:30,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-25 09:09:30,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2020-09-25 09:09:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-25 09:09:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-09-25 09:09:30,837 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 62 [2020-09-25 09:09:30,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:30,838 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-09-25 09:09:30,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:09:30,838 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-09-25 09:09:30,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 09:09:30,840 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:30,840 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 09:09:30,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:09:30,840 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:30,841 INFO L82 PathProgramCache]: Analyzing trace with hash 494995753, now seen corresponding path program 3 times [2020-09-25 09:09:30,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:30,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268132861] [2020-09-25 09:09:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:30,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:35,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:35,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 09:09:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:09:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:09:35,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:35,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:09:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:09:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:09:35,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:35,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:35,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:35,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:35,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:35,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:35,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:35,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:35,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:35,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:09:35,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:09:35,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:35,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:35,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:09:35,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 09:09:35,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:09:35,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:35,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 09:09:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:35,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:35,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:35,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:35,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 09:09:35,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:35,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:35,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:09:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-09-25 09:09:36,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268132861] [2020-09-25 09:09:36,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:09:36,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:09:36,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610348229] [2020-09-25 09:09:36,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:09:36,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:36,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:09:36,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:09:36,016 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 7 states. [2020-09-25 09:09:36,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:36,208 INFO L93 Difference]: Finished difference Result 137 states and 141 transitions. [2020-09-25 09:09:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 09:09:36,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-25 09:09:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:36,210 INFO L225 Difference]: With dead ends: 137 [2020-09-25 09:09:36,210 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 09:09:36,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:09:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 09:09:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 09:09:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 09:09:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-09-25 09:09:36,217 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 69 [2020-09-25 09:09:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:36,218 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-09-25 09:09:36,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:09:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-09-25 09:09:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 09:09:36,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:36,219 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 09:09:36,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:09:36,219 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:36,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1208380197, now seen corresponding path program 1 times [2020-09-25 09:09:36,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:36,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410964020] [2020-09-25 09:09:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:36,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:36,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:41,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:41,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:41,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 09:09:41,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:09:41,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-09-25 09:09:41,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:41,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:09:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:09:41,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 09:09:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:41,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:41,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:41,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:41,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:41,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:41,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:41,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 09:09:41,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:41,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-09-25 09:09:41,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:41,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:09:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:41,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:09:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:09:41,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 09:09:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:41,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:41,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:41,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 09:09:41,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:41,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:09:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:09:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:09:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:09:41,849 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-25 09:09:41,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410964020] [2020-09-25 09:09:41,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:41,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:09:41,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90664715] [2020-09-25 09:09:41,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:09:41,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:41,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:09:41,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:09:41,856 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 13 states. [2020-09-25 09:09:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:42,213 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-09-25 09:09:42,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 09:09:42,214 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-09-25 09:09:42,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:42,215 INFO L225 Difference]: With dead ends: 137 [2020-09-25 09:09:42,215 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 09:09:42,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:09:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 09:09:42,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2020-09-25 09:09:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 09:09:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-09-25 09:09:42,225 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 75 [2020-09-25 09:09:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:42,225 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-09-25 09:09:42,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:09:42,225 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-09-25 09:09:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 09:09:42,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:42,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 09:09:42,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:09:42,228 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash 165765153, now seen corresponding path program 2 times [2020-09-25 09:09:42,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:42,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425430413] [2020-09-25 09:09:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:47,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 09:09:47,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:09:47,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:09:47,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:47,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 09:09:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:09:47,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 09:09:47,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:47,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:47,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:47,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:47,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:47,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:47,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:47,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:47,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:47,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:47,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:47,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:09:47,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:09:47,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 09:09:47,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:47,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:09:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 09:09:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:47,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 09:09:47,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:47,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:47,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:47,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:47,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:47,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:47,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:47,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:09:48,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:48,011 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 09:09:48,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425430413] [2020-09-25 09:09:48,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:48,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 09:09:48,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620253252] [2020-09-25 09:09:48,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 09:09:48,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:48,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 09:09:48,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 09:09:48,014 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 15 states. [2020-09-25 09:09:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:48,545 INFO L93 Difference]: Finished difference Result 147 states and 151 transitions. [2020-09-25 09:09:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 09:09:48,546 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-09-25 09:09:48,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:48,547 INFO L225 Difference]: With dead ends: 147 [2020-09-25 09:09:48,547 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 09:09:48,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2020-09-25 09:09:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 09:09:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2020-09-25 09:09:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 09:09:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-09-25 09:09:48,562 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 81 [2020-09-25 09:09:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:48,563 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-09-25 09:09:48,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 09:09:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-09-25 09:09:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 09:09:48,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:09:48,567 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 09:09:48,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 09:09:48,567 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:09:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:09:48,568 INFO L82 PathProgramCache]: Analyzing trace with hash 56076317, now seen corresponding path program 3 times [2020-09-25 09:09:48,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:09:48,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026246998] [2020-09-25 09:09:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:09:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:48,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:48,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:48,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:48,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:48,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:50,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:51,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:53,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:53,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 09:09:53,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:09:53,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:09:53,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:53,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 09:09:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:09:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 09:09:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:09:53,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:09:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:53,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:53,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:53,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:09:53,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:53,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:53,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:53,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:53,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:09:53,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:09:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:53,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:53,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:54,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:55,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:55,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 09:09:55,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:09:55,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1660 [2020-09-25 09:09:55,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:55,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:09:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:09:55,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:09:55,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:09:55,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 09:09:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:09:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:09:55,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:09:55,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:09:55,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:09:55,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:09:55,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:09:55,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 09:09:55,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:09:55,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:09:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 09:09:55,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026246998] [2020-09-25 09:09:55,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:09:55,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 09:09:55,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719374390] [2020-09-25 09:09:55,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 09:09:55,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:09:55,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 09:09:55,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:09:55,786 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 22 states. [2020-09-25 09:09:56,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:09:56,692 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-09-25 09:09:56,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 09:09:56,692 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 87 [2020-09-25 09:09:56,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:09:56,692 INFO L225 Difference]: With dead ends: 90 [2020-09-25 09:09:56,692 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 09:09:56,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=1203, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 09:09:56,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 09:09:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 09:09:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 09:09:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 09:09:56,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2020-09-25 09:09:56,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:09:56,695 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 09:09:56,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 09:09:56,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 09:09:56,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 09:09:56,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 09:09:56,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 09:09:56,963 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2020-09-25 09:09:57,048 INFO L264 CegarLoopResult]: At program point initENTRY(lines 9 16) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-09-25 09:09:57,048 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 09:09:57,048 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 09:09:57,048 INFO L268 CegarLoopResult]: For program point initEXIT(lines 9 16) no Hoare annotation was computed. [2020-09-25 09:09:57,048 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 09:09:57,049 INFO L268 CegarLoopResult]: For program point L14-2(lines 12 15) no Hoare annotation was computed. [2020-09-25 09:09:57,049 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 09:09:57,049 INFO L268 CegarLoopResult]: For program point L9(lines 9 16) no Hoare annotation was computed. [2020-09-25 09:09:57,049 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-25 09:09:57,049 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-25 09:09:57,049 INFO L264 CegarLoopResult]: At program point L12-5(lines 12 15) the Hoare annotation is: (let ((.cse2 (<= |init_#in~size| init_~size)) (.cse4 (= init_~a.base |init_#in~a.base|)) (.cse3 (<= init_~size |init_#in~size|))) (or (let ((.cse0 (* 4 init_~i~0)) (.cse1 (* 4 init_~size))) (and (= init_~a.offset |init_#in~a.offset|) (<= .cse0 .cse1) .cse2 (or (< .cse0 .cse1) (not (= (select (select |#memory_$Pointer$.base| |init_#in~a.base|) (+ (* |init_#in~size| 4) |init_#in~a.offset| (- 4))) 0))) .cse3 .cse4)) (let ((.cse5 (* init_~i~0 4))) (and (= |init_#in~a.offset| (+ init_~a.offset .cse5)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) .cse2 .cse4 .cse3 (= .cse5 0) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|))))) [2020-09-25 09:09:57,050 INFO L268 CegarLoopResult]: For program point L12-6(lines 9 16) no Hoare annotation was computed. [2020-09-25 09:09:57,050 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 09:09:57,050 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 09:09:57,050 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 09:09:57,050 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 09:09:57,050 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:09:57,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 09:09:57,051 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 09:09:57,051 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 09:09:57,051 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 09:09:57,051 INFO L268 CegarLoopResult]: For program point L31-2(lines 31 35) no Hoare annotation was computed. [2020-09-25 09:09:57,051 INFO L268 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-09-25 09:09:57,051 INFO L268 CegarLoopResult]: For program point L31-4(line 31) no Hoare annotation was computed. [2020-09-25 09:09:57,052 INFO L264 CegarLoopResult]: At program point L31-5(lines 31 35) the Hoare annotation is: (<= 1 main_~flag~0) [2020-09-25 09:09:57,052 INFO L268 CegarLoopResult]: For program point L31-6(lines 31 35) no Hoare annotation was computed. [2020-09-25 09:09:57,052 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 37) no Hoare annotation was computed. [2020-09-25 09:09:57,052 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (= main_~flag~0 0) [2020-09-25 09:09:57,052 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-25 09:09:57,052 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 09:09:57,052 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 09:09:57,053 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 09:09:57,053 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 09:09:57,053 INFO L268 CegarLoopResult]: For program point L24-2(lines 24 30) no Hoare annotation was computed. [2020-09-25 09:09:57,053 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-25 09:09:57,053 INFO L268 CegarLoopResult]: For program point L24-4(line 24) no Hoare annotation was computed. [2020-09-25 09:09:57,053 INFO L264 CegarLoopResult]: At program point L24-5(lines 24 30) the Hoare annotation is: (let ((.cse7 (select |#memory_$Pointer$.base| |main_~#a~0.base|))) (let ((.cse2 (not (= (select .cse7 (+ |main_~#a~0.offset| 4)) 0))) (.cse3 (= (select (select |#memory_$Pointer$.offset| |main_~#a~0.base|) |main_~#a~0.offset|) 0)) (.cse5 (= (select .cse7 |main_~#a~0.offset|) 0)) (.cse6 (not (= (select .cse7 (+ |main_~#a~0.offset| 3999996)) 0))) (.cse0 (= main_~flag~0 0)) (.cse4 (not (= 0 (select .cse7 (+ (* main_~i~1 4) |main_~#a~0.offset|))))) (.cse1 (= main_~i~1 0))) (or (<= 1 main_~flag~0) (and .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse4 (<= main_~i~1 1) .cse5 .cse2) (and .cse3 .cse6 .cse0 (<= main_~i~1 999999) .cse5) (and .cse6 .cse0 .cse1) (and .cse0 .cse4 .cse1)))) [2020-09-25 09:09:57,054 INFO L268 CegarLoopResult]: For program point L24-6(lines 24 30) no Hoare annotation was computed. [2020-09-25 09:09:57,054 INFO L268 CegarLoopResult]: For program point L33(lines 33 34) no Hoare annotation was computed. [2020-09-25 09:09:57,054 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 09:09:57,054 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 37) no Hoare annotation was computed. [2020-09-25 09:09:57,054 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 09:09:57,054 INFO L264 CegarLoopResult]: At program point L34-1(line 34) the Hoare annotation is: false [2020-09-25 09:09:57,055 INFO L268 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-09-25 09:09:57,055 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 17 37) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-09-25 09:09:57,055 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 09:09:57,055 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 29) no Hoare annotation was computed. [2020-09-25 09:09:57,055 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 09:09:57,055 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 09:09:57,055 INFO L268 CegarLoopResult]: For program point L26-4(line 26) no Hoare annotation was computed. [2020-09-25 09:09:57,056 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-25 09:09:57,056 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-25 09:09:57,056 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-25 09:09:57,056 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-25 09:09:57,056 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-25 09:09:57,056 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-25 09:09:57,072 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,074 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,074 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,074 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,075 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,076 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,076 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,078 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,079 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,079 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,079 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,080 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,080 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,080 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,080 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,081 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,081 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,084 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,085 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,086 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,087 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,087 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,087 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,089 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,092 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,093 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,093 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,093 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,093 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,094 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,096 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,096 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,097 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,097 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,098 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,099 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:09:57 BoogieIcfgContainer [2020-09-25 09:09:57,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:09:57,104 INFO L168 Benchmark]: Toolchain (without parser) took 45012.68 ms. Allocated memory was 145.2 MB in the beginning and 426.2 MB in the end (delta: 281.0 MB). Free memory was 101.6 MB in the beginning and 221.2 MB in the end (delta: -119.6 MB). Peak memory consumption was 161.4 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:57,105 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 09:09:57,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.18 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 90.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:57,106 INFO L168 Benchmark]: Boogie Preprocessor took 148.10 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:57,107 INFO L168 Benchmark]: RCFGBuilder took 366.64 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 160.5 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:57,108 INFO L168 Benchmark]: TraceAbstraction took 44174.94 ms. Allocated memory was 201.9 MB in the beginning and 426.2 MB in the end (delta: 224.4 MB). Free memory was 160.5 MB in the beginning and 221.2 MB in the end (delta: -60.8 MB). Peak memory consumption was 163.6 MB. Max. memory is 7.1 GB. [2020-09-25 09:09:57,111 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.18 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 90.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.10 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.64 ms. Allocated memory is still 201.9 MB. Free memory was 179.6 MB in the beginning and 160.5 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44174.94 ms. Allocated memory was 201.9 MB in the beginning and 426.2 MB in the end (delta: 224.4 MB). Free memory was 160.5 MB in the beginning and 221.2 MB in the end (delta: -60.8 MB). Peak memory consumption was 163.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant [2020-09-25 09:09:57,123 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,124 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,125 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,125 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,125 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,125 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,126 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,126 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,126 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,126 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,126 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,127 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,127 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,127 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,127 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,128 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,128 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,128 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,128 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,129 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,129 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,129 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,130 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,130 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,130 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,130 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,131 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,132 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,132 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,132 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,132 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,132 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,133 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: ((((1 <= flag || ((flag == 0 && i == 0) && !(#memory_$Pointer$[a][a + 4] == 0))) || (((((#memory_$Pointer$[a][a] == 0 && flag == 0) && !(0 == #memory_$Pointer$[a][i * 4 + a])) && i <= 1) && #memory_$Pointer$[a][a] == 0) && !(#memory_$Pointer$[a][a + 4] == 0))) || ((((#memory_$Pointer$[a][a] == 0 && !(#memory_$Pointer$[a][a + 3999996] == 0)) && flag == 0) && i <= 999999) && #memory_$Pointer$[a][a] == 0)) || ((!(#memory_$Pointer$[a][a + 3999996] == 0) && flag == 0) && i == 0)) || ((flag == 0 && !(0 == #memory_$Pointer$[a][i * 4 + a])) && i == 0) - InvariantResult [Line: 12]: Loop Invariant [2020-09-25 09:09:57,133 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,134 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,134 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,134 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,134 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,135 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,135 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,135 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,135 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,135 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,136 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,136 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,136 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,137 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,137 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-09-25 09:09:57,137 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,140 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-09-25 09:09:57,140 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,140 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,140 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,141 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,141 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-09-25 09:09:57,141 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-09-25 09:09:57,141 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (((((a == a && 4 * i <= 4 * size) && \old(size) <= size) && (4 * i < 4 * size || !(#memory_$Pointer$[a][\old(size) * 4 + a + -4] == 0))) && size <= \old(size)) && a == a) || ((((((((a == a + i * 4 && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(unknown-#length-unknown) == unknown-#length-unknown) && \old(size) <= size) && a == a) && size <= \old(size)) && i * 4 == 0) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(\valid) == \valid) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 <= flag - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.6s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 472 SDtfs, 564 SDslu, 1440 SDs, 0 SdLazy, 1918 SolverSat, 132 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 112 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 28 PreInvPairs, 44 NumberOfFragments, 253 HoareAnnotationTreeSize, 28 FomulaSimplifications, 262 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 99 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 38.8s InterpolantComputationTime, 623 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 175642 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 207/304 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct!