/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 --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 interpolation-heuristic=FIRST --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-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:30:20,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:30:20,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:30:20,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:30:21,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:30:21,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:30:21,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:30:21,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:30:21,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:30:21,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:30:21,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:30:21,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:30:21,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:30:21,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:30:21,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:30:21,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:30:21,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:30:21,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:30:21,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:30:21,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:30:21,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:30:21,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:30:21,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:30:21,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:30:21,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:30:21,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:30:21,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:30:21,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:30:21,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:30:21,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:30:21,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:30:21,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:30:21,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:30:21,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:30:21,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:30:21,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:30:21,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:30:21,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:30:21,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:30:21,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:30:21,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:30:21,080 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 [2020-09-21 11:30:21,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:30:21,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:30:21,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:30:21,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:30:21,132 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:30:21,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:30:21,133 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:30:21,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:30:21,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:30:21,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:30:21,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:30:21,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:30:21,134 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:30:21,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:30:21,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:30:21,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:30:21,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:30:21,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:30:21,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:30:21,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:30:21,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:30:21,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:30:21,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:30:21,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:30:21,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:30:21,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:30:21,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:30:21,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:30:21,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:30:21,137 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:30:21,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:30:21,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:30:21,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:30:21,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:30:21,622 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:30:21,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-09-21 11:30:21,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76e9ad5fc/04b6d0302ae244df811bb68dbf1afbca/FLAGc68575f31 [2020-09-21 11:30:22,206 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:30:22,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-09-21 11:30:22,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76e9ad5fc/04b6d0302ae244df811bb68dbf1afbca/FLAGc68575f31 [2020-09-21 11:30:22,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76e9ad5fc/04b6d0302ae244df811bb68dbf1afbca [2020-09-21 11:30:22,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:30:22,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:30:22,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:22,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:30:22,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:30:22,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:22,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22, skipping insertion in model container [2020-09-21 11:30:22,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:22,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:30:22,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:30:22,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:22,946 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:30:22,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:30:22,996 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:30:22,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22 WrapperNode [2020-09-21 11:30:22,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:30:22,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:30:22,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:30:22,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:30:23,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:23,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:23,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:23,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:23,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:23,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:23,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (1/1) ... [2020-09-21 11:30:23,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:30:23,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:30:23,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:30:23,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:30:23,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (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 [2020-09-21 11:30:23,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:30:23,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:30:23,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:30:23,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 11:30:23,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:30:23,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:30:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:30:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:30:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 11:30:23,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:30:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:30:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:30:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:30:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:30:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:30:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:30:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:30:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:30:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:30:23,528 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:30:23,528 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-21 11:30:23,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:23 BoogieIcfgContainer [2020-09-21 11:30:23,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:30:23,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:30:23,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:30:23,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:30:23,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:30:22" (1/3) ... [2020-09-21 11:30:23,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023c92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:23, skipping insertion in model container [2020-09-21 11:30:23,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:30:22" (2/3) ... [2020-09-21 11:30:23,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5023c92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:30:23, skipping insertion in model container [2020-09-21 11:30:23,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:30:23" (3/3) ... [2020-09-21 11:30:23,543 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-09-21 11:30:23,556 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:30:23,566 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:30:23,600 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:30:23,647 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:30:23,648 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:30:23,648 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:30:23,648 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:30:23,648 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:30:23,648 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:30:23,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:30:23,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:30:23,669 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-21 11:30:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:30:23,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:23,677 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] [2020-09-21 11:30:23,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:23,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1314310818, now seen corresponding path program 1 times [2020-09-21 11:30:23,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:23,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396499152] [2020-09-21 11:30:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:23,867 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:23,867 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:23,867 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:23,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:23,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:30:23,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:23,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:30:23,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:23,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:30:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:23,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:23,954 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:23,954 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:23,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:23,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:23,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:23,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:23,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:23,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:23,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:23,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:23,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:30:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:23,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:23,981 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:23,981 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:23,982 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:23,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:23,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:30:23,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:30:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:23,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:24,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396499152] [2020-09-21 11:30:24,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:30:24,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:30:24,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123480018] [2020-09-21 11:30:24,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:30:24,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:24,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:30:24,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:30:24,034 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-09-21 11:30:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:24,191 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2020-09-21 11:30:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:30:24,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-09-21 11:30:24,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:24,204 INFO L225 Difference]: With dead ends: 66 [2020-09-21 11:30:24,204 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 11:30:24,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:30:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 11:30:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-21 11:30:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 11:30:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-21 11:30:24,255 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-09-21 11:30:24,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:24,255 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-21 11:30:24,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:30:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-21 11:30:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 11:30:24,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:24,257 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] [2020-09-21 11:30:24,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:30:24,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:24,259 INFO L82 PathProgramCache]: Analyzing trace with hash 34447140, now seen corresponding path program 1 times [2020-09-21 11:30:24,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:24,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758478812] [2020-09-21 11:30:24,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:24,321 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:24,321 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:24,322 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:24,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:24,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 11:30:24,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:24,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:30:24,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:24,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 11:30:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:30:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:30:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:30:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:24,393 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:24,394 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:24,394 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:24,394 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:24,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:24,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:24,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:24,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:24,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:30:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:24,407 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:24,407 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:24,408 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:30:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:30:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:30:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:24,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758478812] [2020-09-21 11:30:24,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:30:24,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:30:24,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783042297] [2020-09-21 11:30:24,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:30:24,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:24,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:30:24,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:30:24,420 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-09-21 11:30:24,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:24,614 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-09-21 11:30:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:30:24,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-09-21 11:30:24,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:24,618 INFO L225 Difference]: With dead ends: 62 [2020-09-21 11:30:24,619 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 11:30:24,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:30:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 11:30:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-09-21 11:30:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-21 11:30:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-21 11:30:24,649 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2020-09-21 11:30:24,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:24,650 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-21 11:30:24,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:30:24,650 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-21 11:30:24,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:30:24,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:24,652 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] [2020-09-21 11:30:24,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:30:24,652 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:24,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:24,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1408881596, now seen corresponding path program 1 times [2020-09-21 11:30:24,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:24,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38101928] [2020-09-21 11:30:24,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:24,879 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:24,879 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:24,880 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-21 11:30:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-21 11:30:24,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:30:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 11:30:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:30:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:30:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:25,155 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:25,155 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:25,155 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:25,156 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:25,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:30:25,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:25,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:25,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:25,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:25,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:30:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:30:25,163 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:30:25,163 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:30:25,163 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:30:25,164 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:30:25,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:30:25,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:30:25,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:30:25,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:30:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:30:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:30:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:30:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:30:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:30:25,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38101928] [2020-09-21 11:30:25,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:30:25,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:30:25,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591071083] [2020-09-21 11:30:25,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:30:25,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:30:25,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:30:25,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:30:25,175 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 10 states. [2020-09-21 11:30:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:30:25,533 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-09-21 11:30:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:30:25,533 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-21 11:30:25,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:30:25,535 INFO L225 Difference]: With dead ends: 66 [2020-09-21 11:30:25,535 INFO L226 Difference]: Without dead ends: 52 [2020-09-21 11:30:25,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:30:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-21 11:30:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-09-21 11:30:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-21 11:30:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-09-21 11:30:25,548 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 31 [2020-09-21 11:30:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:30:25,548 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-09-21 11:30:25,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:30:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-09-21 11:30:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 11:30:25,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:30:25,550 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] [2020-09-21 11:30:25,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:30:25,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:30:25,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:30:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash -728823226, now seen corresponding path program 1 times [2020-09-21 11:30:25,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:30:25,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675561925] [2020-09-21 11:30:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:30:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:30:25,588 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:30:25,588 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:30:25,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:30:25,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:30:25 BoogieIcfgContainer [2020-09-21 11:30:25,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:30:25,626 INFO L168 Benchmark]: Toolchain (without parser) took 3054.40 ms. Allocated memory was 148.9 MB in the beginning and 232.3 MB in the end (delta: 83.4 MB). Free memory was 104.9 MB in the beginning and 105.8 MB in the end (delta: -948.6 kB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:25,629 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:30:25,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.42 ms. Allocated memory is still 148.9 MB. Free memory was 104.2 MB in the beginning and 93.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:25,631 INFO L168 Benchmark]: Boogie Preprocessor took 136.54 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 93.6 MB in the beginning and 181.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:25,633 INFO L168 Benchmark]: RCFGBuilder took 399.55 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 163.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:25,641 INFO L168 Benchmark]: TraceAbstraction took 2085.47 ms. Allocated memory was 204.5 MB in the beginning and 232.3 MB in the end (delta: 27.8 MB). Free memory was 163.1 MB in the beginning and 105.8 MB in the end (delta: 57.3 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:30:25,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 424.42 ms. Allocated memory is still 148.9 MB. Free memory was 104.2 MB in the beginning and 93.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.54 ms. Allocated memory was 148.9 MB in the beginning and 204.5 MB in the end (delta: 55.6 MB). Free memory was 93.6 MB in the beginning and 181.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.55 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 163.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2085.47 ms. Allocated memory was 204.5 MB in the beginning and 232.3 MB in the end (delta: 27.8 MB). Free memory was 163.1 MB in the beginning and 105.8 MB in the end (delta: 57.3 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i