/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/eca-rers2012/Problem05_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:52:50,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:52:50,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:52:50,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:52:50,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:52:50,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:52:50,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:52:50,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:52:50,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:52:50,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:52:50,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:52:50,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:52:50,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:52:50,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:52:50,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:52:50,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:52:50,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:52:50,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:52:50,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:52:50,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:52:50,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:52:50,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:52:50,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:52:50,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:52:50,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:52:50,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:52:50,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:52:50,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:52:50,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:52:50,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:52:50,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:52:50,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:52:50,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:52:50,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:52:50,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:52:50,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:52:50,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:52:50,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:52:50,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:52:50,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:52:50,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:52:50,582 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 11:52:50,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:52:50,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:52:50,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:52:50,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:52:50,608 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:52:50,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:52:50,609 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:52:50,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:52:50,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:52:50,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:52:50,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:52:50,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:52:50,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:52:50,610 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:52:50,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:52:50,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:52:50,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:52:50,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:52:50,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:52:50,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:52:50,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:52:50,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:52:50,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:52:50,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:52:50,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:52:50,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:52:50,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:52:50,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:52:50,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:52:50,613 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 11:52:50,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:52:50,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:52:50,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:52:50,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:52:50,955 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:52:50,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label27.c [2020-10-12 11:52:51,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af3eb936f/71ebf171ac0f42e696338f5bbc080332/FLAGf9ca04a7a [2020-10-12 11:52:52,051 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:52:52,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label27.c [2020-10-12 11:52:52,099 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af3eb936f/71ebf171ac0f42e696338f5bbc080332/FLAGf9ca04a7a [2020-10-12 11:52:52,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af3eb936f/71ebf171ac0f42e696338f5bbc080332 [2020-10-12 11:52:52,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:52:52,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:52:52,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:52:52,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:52:52,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:52:52,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:52:52" (1/1) ... [2020-10-12 11:52:52,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:52, skipping insertion in model container [2020-10-12 11:52:52,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:52:52" (1/1) ... [2020-10-12 11:52:52,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:52:52,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:52:55,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:52:55,163 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:52:56,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:52:56,722 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:52:56,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56 WrapperNode [2020-10-12 11:52:56,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:52:56,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:52:56,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:52:56,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:52:56,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (1/1) ... [2020-10-12 11:52:56,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (1/1) ... [2020-10-12 11:52:56,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (1/1) ... [2020-10-12 11:52:56,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (1/1) ... [2020-10-12 11:52:57,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (1/1) ... [2020-10-12 11:52:57,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (1/1) ... [2020-10-12 11:52:57,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (1/1) ... [2020-10-12 11:52:57,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:52:57,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:52:57,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:52:57,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:52:57,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (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 11:52:57,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:52:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:52:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:52:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 11:52:57,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 11:52:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 11:52:57,417 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 11:52:57,418 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-12 11:52:57,418 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-12 11:52:57,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-12 11:52:57,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:52:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:52:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 11:52:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 11:52:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 11:52:57,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 11:52:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-12 11:52:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-12 11:52:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-12 11:52:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:52:57,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:52:57,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:52:57,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:52:57,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:52:57,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:53:05,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:53:05,623 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:53:05,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:53:05 BoogieIcfgContainer [2020-10-12 11:53:05,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:53:05,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:53:05,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:53:05,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:53:05,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:52:52" (1/3) ... [2020-10-12 11:53:05,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22142988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:53:05, skipping insertion in model container [2020-10-12 11:53:05,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:52:56" (2/3) ... [2020-10-12 11:53:05,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22142988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:53:05, skipping insertion in model container [2020-10-12 11:53:05,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:53:05" (3/3) ... [2020-10-12 11:53:05,649 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem05_label27.c [2020-10-12 11:53:05,659 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:53:05,668 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:53:05,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:53:05,716 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:53:05,716 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:53:05,716 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:53:05,716 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:53:05,716 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:53:05,717 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:53:05,717 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:53:05,717 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:53:05,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states. [2020-10-12 11:53:05,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2020-10-12 11:53:05,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:53:05,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:05,875 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:53:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:53:05,882 INFO L82 PathProgramCache]: Analyzing trace with hash 40544905, now seen corresponding path program 1 times [2020-10-12 11:53:05,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:53:05,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10935101] [2020-10-12 11:53:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:53:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:11,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:11,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1710 [2020-10-12 11:53:11,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:11,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-12 11:53:11,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 11:53:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:53:11,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1704 [2020-10-12 11:53:11,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 11:53:13,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:53:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:13,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:13,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:13,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:53:13,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:13,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 11:53:13,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:13,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:53:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:53:13,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:53:13,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:53:16,202 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 11:53:16,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10935101] [2020-10-12 11:53:16,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:53:16,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 11:53:16,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474356322] [2020-10-12 11:53:16,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 11:53:16,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:53:16,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 11:53:16,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 11:53:16,231 INFO L87 Difference]: Start difference. First operand 2222 states. Second operand 4 states. [2020-10-12 11:53:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:53:33,547 INFO L93 Difference]: Finished difference Result 6360 states and 11961 transitions. [2020-10-12 11:53:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:53:33,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1688 [2020-10-12 11:53:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:53:33,599 INFO L225 Difference]: With dead ends: 6360 [2020-10-12 11:53:33,600 INFO L226 Difference]: Without dead ends: 4074 [2020-10-12 11:53:33,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:53:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2020-10-12 11:53:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4004. [2020-10-12 11:53:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4004 states. [2020-10-12 11:53:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 6504 transitions. [2020-10-12 11:53:33,910 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 6504 transitions. Word has length 1688 [2020-10-12 11:53:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:53:33,914 INFO L479 AbstractCegarLoop]: Abstraction has 4004 states and 6504 transitions. [2020-10-12 11:53:33,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 11:53:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 6504 transitions. [2020-10-12 11:53:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1700 [2020-10-12 11:53:34,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:53:34,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:34,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:53:34,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:53:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:53:34,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1872921574, now seen corresponding path program 1 times [2020-10-12 11:53:34,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:53:34,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767545459] [2020-10-12 11:53:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:53:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:34,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:35,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:39,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:39,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1723 [2020-10-12 11:53:39,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:53:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-12 11:53:39,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:53:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 11:53:39,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1701 [2020-10-12 11:53:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:53:41,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:53:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:41,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:41,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:53:41,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:41,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:53:41,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:53:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:53:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:53:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:53:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:53:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:53:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:53:42,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:53:42,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:53:42,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:53:42,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 11:53:42,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:53:42,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:53:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:53:42,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 11:53:42,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:53:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:53:44,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767545459] [2020-10-12 11:53:44,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:53:44,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:53:44,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863203465] [2020-10-12 11:53:44,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:53:44,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:53:44,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:53:44,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:53:44,895 INFO L87 Difference]: Start difference. First operand 4004 states and 6504 transitions. Second operand 6 states. [2020-10-12 11:54:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:54:14,498 INFO L93 Difference]: Finished difference Result 11781 states and 20316 transitions. [2020-10-12 11:54:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:54:14,500 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1699 [2020-10-12 11:54:14,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:54:14,544 INFO L225 Difference]: With dead ends: 11781 [2020-10-12 11:54:14,544 INFO L226 Difference]: Without dead ends: 7783 [2020-10-12 11:54:14,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:54:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7783 states. [2020-10-12 11:54:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7783 to 7609. [2020-10-12 11:54:14,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7609 states. [2020-10-12 11:54:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7609 states to 7609 states and 12321 transitions. [2020-10-12 11:54:14,742 INFO L78 Accepts]: Start accepts. Automaton has 7609 states and 12321 transitions. Word has length 1699 [2020-10-12 11:54:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:54:14,746 INFO L479 AbstractCegarLoop]: Abstraction has 7609 states and 12321 transitions. [2020-10-12 11:54:14,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:54:14,746 INFO L276 IsEmpty]: Start isEmpty. Operand 7609 states and 12321 transitions. [2020-10-12 11:54:14,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1722 [2020-10-12 11:54:14,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:54:14,940 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:14,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:54:14,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:54:14,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:54:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash 659276259, now seen corresponding path program 1 times [2020-10-12 11:54:14,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:54:14,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353741402] [2020-10-12 11:54:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:54:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:20,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:20,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1747 [2020-10-12 11:54:20,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:54:20,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 11:54:20,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:54:20,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:54:20,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:54:20,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:54:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:54:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:21,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:21,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:54:21,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:54:21,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:54:21,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:54:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:54:21,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:54:21,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:54:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:54:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:21,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:21,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:54:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:54:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:54:21,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:54:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:54:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 11:54:21,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:54:21,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 11:54:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:21,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:21,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:54:21,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:54:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 11:54:21,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:54:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 11:54:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:54:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:54:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 11:54:22,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353741402] [2020-10-12 11:54:22,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:54:22,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:54:22,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855672948] [2020-10-12 11:54:22,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:54:22,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:54:22,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:54:22,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:54:22,585 INFO L87 Difference]: Start difference. First operand 7609 states and 12321 transitions. Second operand 7 states. [2020-10-12 11:54:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:54:46,292 INFO L93 Difference]: Finished difference Result 22717 states and 37629 transitions. [2020-10-12 11:54:46,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:54:46,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1721 [2020-10-12 11:54:46,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:54:46,380 INFO L225 Difference]: With dead ends: 22717 [2020-10-12 11:54:46,381 INFO L226 Difference]: Without dead ends: 15114 [2020-10-12 11:54:46,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:54:46,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15114 states. [2020-10-12 11:54:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15114 to 14833. [2020-10-12 11:54:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14833 states. [2020-10-12 11:54:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14833 states to 14833 states and 22008 transitions. [2020-10-12 11:54:46,870 INFO L78 Accepts]: Start accepts. Automaton has 14833 states and 22008 transitions. Word has length 1721 [2020-10-12 11:54:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:54:46,871 INFO L479 AbstractCegarLoop]: Abstraction has 14833 states and 22008 transitions. [2020-10-12 11:54:46,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:54:46,872 INFO L276 IsEmpty]: Start isEmpty. Operand 14833 states and 22008 transitions. [2020-10-12 11:54:46,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2020-10-12 11:54:46,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:54:46,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:46,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:54:46,953 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:54:46,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:54:46,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1578644593, now seen corresponding path program 1 times [2020-10-12 11:54:46,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:54:46,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298038319] [2020-10-12 11:54:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:54:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:47,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:52,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:52,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1744 [2020-10-12 11:54:52,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:54:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 11:54:52,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 11:54:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 11:54:52,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1701 [2020-10-12 11:54:52,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:54:53,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:54:53,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:53,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:53,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:54:53,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:54:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 11:54:53,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:54:53,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:54:53,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:54:53,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:54:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:54:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:54:53,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:54:53,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:54:53,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:54:53,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:54:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:54:53,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:54:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:54:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:54:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:54:53,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:54:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:54:56,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298038319] [2020-10-12 11:54:56,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:54:56,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:54:56,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80816618] [2020-10-12 11:54:56,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:54:56,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:54:56,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:54:56,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:54:56,137 INFO L87 Difference]: Start difference. First operand 14833 states and 22008 transitions. Second operand 5 states. [2020-10-12 11:55:17,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:55:17,440 INFO L93 Difference]: Finished difference Result 36794 states and 56764 transitions. [2020-10-12 11:55:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:55:17,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1720 [2020-10-12 11:55:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:55:17,515 INFO L225 Difference]: With dead ends: 36794 [2020-10-12 11:55:17,515 INFO L226 Difference]: Without dead ends: 21967 [2020-10-12 11:55:17,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:55:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21967 states. [2020-10-12 11:55:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21967 to 21930. [2020-10-12 11:55:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21930 states. [2020-10-12 11:55:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21930 states to 21930 states and 31082 transitions. [2020-10-12 11:55:18,059 INFO L78 Accepts]: Start accepts. Automaton has 21930 states and 31082 transitions. Word has length 1720 [2020-10-12 11:55:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:55:18,061 INFO L479 AbstractCegarLoop]: Abstraction has 21930 states and 31082 transitions. [2020-10-12 11:55:18,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:55:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 21930 states and 31082 transitions. [2020-10-12 11:55:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1751 [2020-10-12 11:55:18,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:55:18,172 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:18,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:55:18,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:55:18,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:55:18,174 INFO L82 PathProgramCache]: Analyzing trace with hash 970362512, now seen corresponding path program 1 times [2020-10-12 11:55:18,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:55:18,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067519376] [2020-10-12 11:55:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:55:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1778 [2020-10-12 11:55:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:55:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-12 11:55:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 11:55:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 11:55:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 11:55:23,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:55:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:23,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:23,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:23,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:55:23,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:23,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 11:55:23,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:55:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:23,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:55:23,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:23,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:55:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:23,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:23,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:55:23,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:55:23,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:55:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:23,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 11:55:23,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:23,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 11:55:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:23,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:23,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:23,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:55:23,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:55:23,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 11:55:23,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:23,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:55:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:55:23,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:55:23,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:23,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-12 11:55:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:23,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:23,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:23,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:55:23,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:23,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:55:23,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:23,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:55:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:55:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:55:23,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 79 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-12 11:55:25,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067519376] [2020-10-12 11:55:25,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:55:25,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:55:25,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302128521] [2020-10-12 11:55:25,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:55:25,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:55:25,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:55:25,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:55:25,082 INFO L87 Difference]: Start difference. First operand 21930 states and 31082 transitions. Second operand 8 states. [2020-10-12 11:55:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:55:47,179 INFO L93 Difference]: Finished difference Result 51323 states and 73662 transitions. [2020-10-12 11:55:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:55:47,181 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1750 [2020-10-12 11:55:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:55:47,277 INFO L225 Difference]: With dead ends: 51323 [2020-10-12 11:55:47,278 INFO L226 Difference]: Without dead ends: 29399 [2020-10-12 11:55:47,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:55:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29399 states. [2020-10-12 11:55:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29399 to 29301. [2020-10-12 11:55:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29301 states. [2020-10-12 11:55:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29301 states to 29301 states and 38716 transitions. [2020-10-12 11:55:48,012 INFO L78 Accepts]: Start accepts. Automaton has 29301 states and 38716 transitions. Word has length 1750 [2020-10-12 11:55:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:55:48,013 INFO L479 AbstractCegarLoop]: Abstraction has 29301 states and 38716 transitions. [2020-10-12 11:55:48,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:55:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 29301 states and 38716 transitions. [2020-10-12 11:55:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1809 [2020-10-12 11:55:48,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:55:48,096 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:48,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:55:48,097 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:55:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:55:48,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2077879536, now seen corresponding path program 1 times [2020-10-12 11:55:48,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:55:48,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918672055] [2020-10-12 11:55:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:55:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:49,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:53,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:53,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1834 [2020-10-12 11:55:53,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:55:53,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 11:55:53,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 11:55:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-12 11:55:53,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1273 [2020-10-12 11:55:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:57,755 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-12 11:55:57,939 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2020-10-12 11:55:58,245 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 37 [2020-10-12 11:55:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:55:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:58,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:58,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:55:58,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:55:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:55:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:55:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:58,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:55:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:58,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:58,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 11:55:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 11:55:58,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:55:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:55:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:55:58,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 11:55:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:55:58,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:55:58,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:55:58,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 11:55:58,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:55:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:55:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:55:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:55:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:55:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 11:55:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:56:20,333 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-12 11:56:20,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918672055] [2020-10-12 11:56:20,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:56:20,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 11:56:20,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841688408] [2020-10-12 11:56:20,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 11:56:20,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:56:20,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 11:56:20,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-12 11:56:20,337 INFO L87 Difference]: Start difference. First operand 29301 states and 38716 transitions. Second operand 23 states. [2020-10-12 11:56:23,190 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 11:56:27,302 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 75