/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-patterns/array7_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:24:16,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:24:16,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:24:16,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:24:16,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:24:16,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:24:16,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:24:16,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:24:16,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:24:16,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:24:16,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:24:16,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:24:16,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:24:16,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:24:16,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:24:16,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:24:16,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:24:16,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:24:16,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:24:16,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:24:16,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:24:16,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:24:16,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:24:16,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:24:16,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:24:16,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:24:16,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:24:16,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:24:16,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:24:16,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:24:16,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:24:16,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:24:16,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:24:16,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:24:16,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:24:16,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:24:16,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:24:16,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:24:16,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:24:16,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:24:16,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:24:16,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 10:24:16,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:24:16,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:24:16,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:24:16,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:24:16,187 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:24:16,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:24:16,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:24:16,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:24:16,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:24:16,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:24:16,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:24:16,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:24:16,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:24:16,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:24:16,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:24:16,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:24:16,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:24:16,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:24:16,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:24:16,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:24:16,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:24:16,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:24:16,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:24:16,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:24:16,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:24:16,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:24:16,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:24:16,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:24:16,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:24:16,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:24:16,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:24:16,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:24:16,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:24:16,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:24:16,624 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:24:16,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array7_pattern.c [2020-10-12 10:24:16,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49b08f6ff/6bd09c7bc1ef4a0f983a96a5b7ca0395/FLAG7ce403955 [2020-10-12 10:24:17,321 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:24:17,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-patterns/array7_pattern.c [2020-10-12 10:24:17,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49b08f6ff/6bd09c7bc1ef4a0f983a96a5b7ca0395/FLAG7ce403955 [2020-10-12 10:24:17,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49b08f6ff/6bd09c7bc1ef4a0f983a96a5b7ca0395 [2020-10-12 10:24:17,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:24:17,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:24:17,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:17,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:24:17,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:24:17,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f7f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:17, skipping insertion in model container [2020-10-12 10:24:17,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:24:17" (1/1) ... [2020-10-12 10:24:17,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:24:17,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:24:17,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:17,903 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:24:17,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:24:18,069 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:24:18,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18 WrapperNode [2020-10-12 10:24:18,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:24:18,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:24:18,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:24:18,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:24:18,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... [2020-10-12 10:24:18,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... [2020-10-12 10:24:18,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... [2020-10-12 10:24:18,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... [2020-10-12 10:24:18,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... [2020-10-12 10:24:18,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... [2020-10-12 10:24:18,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... [2020-10-12 10:24:18,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:24:18,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:24:18,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:24:18,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:24:18,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:24:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:24:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:24:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:24:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:24:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:24:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:24:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:24:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:24:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:24:18,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:24:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-12 10:24:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:24:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:24:18,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:24:18,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:24:18,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:24:18,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:24:18,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:24:18,564 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:24:18,564 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:24:18,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:18 BoogieIcfgContainer [2020-10-12 10:24:18,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:24:18,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:24:18,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:24:18,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:24:18,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:24:17" (1/3) ... [2020-10-12 10:24:18,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234182b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:18, skipping insertion in model container [2020-10-12 10:24:18,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:24:18" (2/3) ... [2020-10-12 10:24:18,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234182b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:24:18, skipping insertion in model container [2020-10-12 10:24:18,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:24:18" (3/3) ... [2020-10-12 10:24:18,596 INFO L109 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2020-10-12 10:24:18,612 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:24:18,621 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:24:18,645 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:24:18,694 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:24:18,695 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:24:18,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:24:18,696 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:24:18,696 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:24:18,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:24:18,697 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:24:18,697 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:24:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-12 10:24:18,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 10:24:18,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:18,741 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] [2020-10-12 10:24:18,741 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:18,751 INFO L82 PathProgramCache]: Analyzing trace with hash 902046776, now seen corresponding path program 1 times [2020-10-12 10:24:18,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:18,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661753074] [2020-10-12 10:24:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:18,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:19,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:19,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:19,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 10:24:19,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:24:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-12 10:24:19,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:24:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 10:24:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:24:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 10:24:19,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:19,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:19,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:19,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:19,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:24:19,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:19,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:24:19,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:24:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:19,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:19,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:19,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:19,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:24:19,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 10:24:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 10:24:19,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:19,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:24:19,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661753074] [2020-10-12 10:24:19,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:24:19,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:24:19,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143960150] [2020-10-12 10:24:19,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:24:19,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:19,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:24:19,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:24:19,661 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2020-10-12 10:24:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:19,980 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2020-10-12 10:24:19,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:24:19,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-12 10:24:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:19,997 INFO L225 Difference]: With dead ends: 70 [2020-10-12 10:24:19,997 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 10:24:20,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 10:24:20,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 10:24:20,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-12 10:24:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 10:24:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-12 10:24:20,072 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2020-10-12 10:24:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:20,073 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-12 10:24:20,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:24:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-12 10:24:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:24:20,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:20,078 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:20,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:24:20,079 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:20,079 INFO L82 PathProgramCache]: Analyzing trace with hash 651207537, now seen corresponding path program 1 times [2020-10-12 10:24:20,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:20,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092727264] [2020-10-12 10:24:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:20,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:20,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:22,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:25,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:25,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 10:24:25,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:24:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 10:24:25,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 10:24:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 10:24:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 10:24:25,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:24:25,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:25,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:25,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:25,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:25,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:25,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:24:25,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:25,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:25,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:25,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:25,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:25,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:24:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:25,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:25,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:25,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:25,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:25,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:24:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:25,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 10:24:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:25,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:25,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:25,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 10:24:25,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:24:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:24:25,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:24:25,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:24:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:25,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:25,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:25,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:25,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 10:24:25,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:24:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:24:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:24:25,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 10:24:25,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092727264] [2020-10-12 10:24:25,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:24:25,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:24:25,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694331032] [2020-10-12 10:24:25,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:24:25,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:25,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:24:25,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:24:25,333 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 10 states. [2020-10-12 10:24:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:27,851 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-12 10:24:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 10:24:27,852 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-12 10:24:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:27,855 INFO L225 Difference]: With dead ends: 43 [2020-10-12 10:24:27,855 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 10:24:27,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-12 10:24:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 10:24:27,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 10:24:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 10:24:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-10-12 10:24:27,869 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 34 [2020-10-12 10:24:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:27,870 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-10-12 10:24:27,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:24:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-10-12 10:24:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 10:24:27,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:27,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-12 10:24:27,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:24:27,873 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash -324382065, now seen corresponding path program 2 times [2020-10-12 10:24:27,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:27,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052544275] [2020-10-12 10:24:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:32,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:32,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 10:24:32,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:24:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 10:24:32,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 10:24:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 10:24:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 10:24:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:33,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:33,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:33,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:33,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:33,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:24:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:33,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:24:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:33,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:33,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:33,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:33,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 10:24:33,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:33,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:24:33,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 10:24:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:33,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:33,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:33,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:33,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 10:24:33,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:24:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:33,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:24:33,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:33,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:24:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 10:24:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:24:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:24:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:33,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 10:24:33,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052544275] [2020-10-12 10:24:33,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:24:33,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 10:24:33,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013186087] [2020-10-12 10:24:33,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 10:24:33,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:33,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 10:24:33,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 10:24:33,162 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 10 states. [2020-10-12 10:24:35,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:35,787 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-12 10:24:35,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 10:24:35,788 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-12 10:24:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:35,791 INFO L225 Difference]: With dead ends: 44 [2020-10-12 10:24:35,793 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 10:24:35,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2020-10-12 10:24:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 10:24:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-12 10:24:35,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 10:24:35,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-12 10:24:35,822 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 36 [2020-10-12 10:24:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:35,828 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-12 10:24:35,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 10:24:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-12 10:24:35,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 10:24:35,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:35,831 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:35,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 10:24:35,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:35,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1563119059, now seen corresponding path program 3 times [2020-10-12 10:24:35,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:35,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216921082] [2020-10-12 10:24:35,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:35,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:35,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:40,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:40,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 10:24:40,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 10:24:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 10:24:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 10:24:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 10:24:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 10:24:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:40,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:24:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:40,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:40,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:24:40,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:24:40,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:40,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:24:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:40,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:40,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:40,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 10:24:40,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:24:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:24:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:24:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 10:24:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:40,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:41,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:41,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:41,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:41,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 10:24:41,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:24:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:24:41,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:24:41,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 10:24:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:24:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:24:41,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:24:41,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:24:41,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:24:41,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 10:24:41,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:24:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:24:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 10:24:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:24:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:24:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 10:24:41,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216921082] [2020-10-12 10:24:41,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:24:41,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 10:24:41,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895009296] [2020-10-12 10:24:41,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 10:24:41,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:24:41,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 10:24:41,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:24:41,084 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 8 states. [2020-10-12 10:24:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:24:43,677 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-10-12 10:24:43,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 10:24:43,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-12 10:24:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:24:43,680 INFO L225 Difference]: With dead ends: 70 [2020-10-12 10:24:43,681 INFO L226 Difference]: Without dead ends: 41 [2020-10-12 10:24:43,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-12 10:24:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-12 10:24:43,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-12 10:24:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 10:24:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-12 10:24:43,697 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-10-12 10:24:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:24:43,698 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-12 10:24:43,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 10:24:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-12 10:24:43,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 10:24:43,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:24:43,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:24:43,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 10:24:43,702 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:24:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:24:43,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1796117393, now seen corresponding path program 1 times [2020-10-12 10:24:43,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:24:43,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45071411] [2020-10-12 10:24:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:24:43,719 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-12 10:24:43,719 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-12 10:24:43,719 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:24:43,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 10:24:43,763 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:24:43,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:24:43 BoogieIcfgContainer [2020-10-12 10:24:43,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:24:43,768 INFO L168 Benchmark]: Toolchain (without parser) took 26142.80 ms. Allocated memory was 137.4 MB in the beginning and 468.2 MB in the end (delta: 330.8 MB). Free memory was 100.2 MB in the beginning and 325.7 MB in the end (delta: -225.5 MB). Peak memory consumption was 105.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:43,771 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:24:43,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.67 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 180.6 MB in the end (delta: -80.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:43,776 INFO L168 Benchmark]: Boogie Preprocessor took 70.80 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:43,783 INFO L168 Benchmark]: RCFGBuilder took 429.55 ms. Allocated memory is still 201.9 MB. Free memory was 178.0 MB in the beginning and 160.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:43,784 INFO L168 Benchmark]: TraceAbstraction took 25191.04 ms. Allocated memory was 201.9 MB in the beginning and 468.2 MB in the end (delta: 266.3 MB). Free memory was 159.5 MB in the beginning and 325.7 MB in the end (delta: -166.2 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:24:43,795 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 444.67 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 180.6 MB in the end (delta: -80.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.80 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 429.55 ms. Allocated memory is still 201.9 MB. Free memory was 178.0 MB in the beginning and 160.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25191.04 ms. Allocated memory was 201.9 MB in the beginning and 468.2 MB in the end (delta: 266.3 MB). Free memory was 159.5 MB in the beginning and 325.7 MB in the end (delta: -166.2 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 32]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L36] signed long long ARR_SIZE ; [L40] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L41] CALL assume_abort_if_not(ARR_SIZE > 0) [L30] COND FALSE !(!cond) [L41] RET assume_abort_if_not(ARR_SIZE > 0) [L43] int array1[ARR_SIZE] ; [L44] int array2[ARR_SIZE] ; [L45] int count = 0, num = -1 ; [L46] signed long long sum = 0 ; [L47] int temp ; [L48] signed long long index,pivot ; [L50] count=0 [L50] COND TRUE count 0) [L30] COND FALSE !(!cond) [L62] RET assume_abort_if_not(pivot > 0) [L63] CALL assume_abort_if_not(index >= pivot && index < ARR_SIZE-pivot) [L30] COND FALSE !(!cond) [L63] RET assume_abort_if_not(index >= pivot && index < ARR_SIZE-pivot) [L65] EXPR array1[index-pivot] [L65] EXPR array1[index+pivot] [L65] array1[index] = array1[index-pivot] + array1[index+pivot] [L66] EXPR array2[index-pivot] [L66] EXPR array2[index+pivot] [L66] array2[index] = array2[index-pivot] + array2[index+pivot] [L68] temp = __VERIFIER_nondet_int() [L69] COND TRUE temp == 0 [L72] count=0 [L72] COND TRUE count