/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/Problem06_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 12:15:39,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 12:15:39,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 12:15:39,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 12:15:39,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 12:15:39,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 12:15:39,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 12:15:39,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 12:15:39,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 12:15:39,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 12:15:39,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 12:15:39,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 12:15:39,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 12:15:39,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 12:15:39,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 12:15:39,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 12:15:39,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 12:15:39,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 12:15:39,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 12:15:39,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 12:15:39,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 12:15:39,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 12:15:39,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 12:15:39,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 12:15:39,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 12:15:39,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 12:15:39,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 12:15:39,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 12:15:39,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 12:15:39,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 12:15:39,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 12:15:39,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 12:15:39,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 12:15:39,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 12:15:39,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 12:15:39,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 12:15:39,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 12:15:39,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 12:15:39,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 12:15:39,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 12:15:39,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 12:15:39,683 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 12:15:39,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 12:15:39,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 12:15:39,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 12:15:39,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 12:15:39,725 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 12:15:39,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 12:15:39,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 12:15:39,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 12:15:39,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 12:15:39,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 12:15:39,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 12:15:39,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 12:15:39,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 12:15:39,728 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 12:15:39,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 12:15:39,729 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 12:15:39,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 12:15:39,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 12:15:39,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 12:15:39,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 12:15:39,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 12:15:39,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 12:15:39,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 12:15:39,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 12:15:39,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 12:15:39,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 12:15:39,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 12:15:39,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 12:15:39,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 12:15:39,732 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 12:15:40,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 12:15:40,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 12:15:40,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 12:15:40,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 12:15:40,099 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 12:15:40,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label53.c [2020-10-12 12:15:40,159 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1952d5724/da1c8466307b4529b883e1136080dea8/FLAGe406a5c45 [2020-10-12 12:15:41,017 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 12:15:41,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label53.c [2020-10-12 12:15:41,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1952d5724/da1c8466307b4529b883e1136080dea8/FLAGe406a5c45 [2020-10-12 12:15:41,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1952d5724/da1c8466307b4529b883e1136080dea8 [2020-10-12 12:15:41,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 12:15:41,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 12:15:41,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 12:15:41,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 12:15:41,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 12:15:41,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:15:41" (1/1) ... [2020-10-12 12:15:41,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f8adb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:41, skipping insertion in model container [2020-10-12 12:15:41,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:15:41" (1/1) ... [2020-10-12 12:15:41,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 12:15:41,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 12:15:44,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:44,129 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 12:15:45,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 12:15:45,202 INFO L208 MainTranslator]: Completed translation [2020-10-12 12:15:45,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45 WrapperNode [2020-10-12 12:15:45,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 12:15:45,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 12:15:45,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 12:15:45,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 12:15:45,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (1/1) ... [2020-10-12 12:15:45,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (1/1) ... [2020-10-12 12:15:45,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (1/1) ... [2020-10-12 12:15:45,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (1/1) ... [2020-10-12 12:15:45,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (1/1) ... [2020-10-12 12:15:45,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (1/1) ... [2020-10-12 12:15:45,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (1/1) ... [2020-10-12 12:15:45,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 12:15:45,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 12:15:45,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 12:15:45,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 12:15:45,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (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 12:15:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 12:15:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 12:15:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 12:15:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 12:15:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 12:15:45,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 12:15:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-12 12:15:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 12:15:45,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 12:15:45,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 12:15:45,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 12:15:45,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 12:15:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-12 12:15:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 12:15:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 12:15:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 12:15:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 12:15:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 12:15:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 12:15:52,559 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 12:15:52,559 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 12:15:52,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:52 BoogieIcfgContainer [2020-10-12 12:15:52,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 12:15:52,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 12:15:52,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 12:15:52,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 12:15:52,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:15:41" (1/3) ... [2020-10-12 12:15:52,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa70518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:52, skipping insertion in model container [2020-10-12 12:15:52,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:15:45" (2/3) ... [2020-10-12 12:15:52,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa70518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:15:52, skipping insertion in model container [2020-10-12 12:15:52,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:15:52" (3/3) ... [2020-10-12 12:15:52,580 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label53.c [2020-10-12 12:15:52,590 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 12:15:52,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 12:15:52,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 12:15:52,642 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 12:15:52,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 12:15:52,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 12:15:52,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 12:15:52,643 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 12:15:52,643 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 12:15:52,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 12:15:52,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 12:15:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-12 12:15:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-12 12:15:52,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:15:52,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:52,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:15:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:15:52,743 INFO L82 PathProgramCache]: Analyzing trace with hash 925825567, now seen corresponding path program 1 times [2020-10-12 12:15:52,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:15:52,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620771149] [2020-10-12 12:15:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:15:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:15:54,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:56,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:15:58,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:15:58,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-12 12:15:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:15:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-12 12:15:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:15:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 12:15:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:15:58,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-12 12:15:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 12:16:02,587 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-12 12:16:02,797 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-12 12:16:02,959 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-12 12:16:03,129 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-12 12:16:03,279 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-12 12:16:03,435 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 12:16:03,642 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 12:16:03,804 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-12 12:16:04,124 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 62 [2020-10-12 12:16:04,438 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 64 [2020-10-12 12:16:04,731 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 62 [2020-10-12 12:16:05,119 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:16:05,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:16:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:16:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:16:05,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:16:05,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:16:05,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:16:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 12:16:05,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:16:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:16:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:16:05,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:16:05,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:16:17,252 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 12:16:17,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620771149] [2020-10-12 12:16:17,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 12:16:17,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 12:16:17,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340088424] [2020-10-12 12:16:17,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 12:16:17,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:16:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 12:16:17,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:16:17,283 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 18 states. [2020-10-12 12:16:17,617 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 12:16:18,188 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 12:16:18,751 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 166 [2020-10-12 12:16:19,375 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 174 [2020-10-12 12:16:22,828 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 173 [2020-10-12 12:16:25,488 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 172 [2020-10-12 12:16:27,632 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 163 [2020-10-12 12:16:28,195 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 169 [2020-10-12 12:16:29,049 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 168 [2020-10-12 12:16:37,522 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 164 [2020-10-12 12:16:38,202 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 171 [2020-10-12 12:16:40,966 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 168 [2020-10-12 12:16:47,632 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 159 [2020-10-12 12:16:48,261 WARN L193 SmtUtils]: Spent 532.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 163 [2020-10-12 12:16:50,624 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2020-10-12 12:17:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:02,551 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-12 12:17:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 12:17:02,554 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1002 [2020-10-12 12:17:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:02,602 INFO L225 Difference]: With dead ends: 3396 [2020-10-12 12:17:02,602 INFO L226 Difference]: Without dead ends: 2019 [2020-10-12 12:17:02,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 12:17:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-12 12:17:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-12 12:17:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-12 12:17:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-12 12:17:02,770 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 1002 [2020-10-12 12:17:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:02,772 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-12 12:17:02,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 12:17:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-12 12:17:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2020-10-12 12:17:02,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:02,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:02,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 12:17:02,838 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:02,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1647944142, now seen corresponding path program 1 times [2020-10-12 12:17:02,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:02,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263734288] [2020-10-12 12:17:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:03,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:08,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:08,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1090 [2020-10-12 12:17:08,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 12:17:08,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-12 12:17:08,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 12:17:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:17:08,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1009 [2020-10-12 12:17:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:09,193 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:09,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:09,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:09,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 12:17:09,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:17:09,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:09,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:17:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:17:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:09,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:09,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-12 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:09,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:17:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 12:17:10,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263734288] [2020-10-12 12:17:10,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:10,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:17:10,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363098829] [2020-10-12 12:17:10,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 12:17:10,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:10,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 12:17:10,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 12:17:10,540 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 6 states. [2020-10-12 12:17:10,697 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:17:11,090 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:17:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:32,371 INFO L93 Difference]: Finished difference Result 5487 states and 9498 transitions. [2020-10-12 12:17:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 12:17:32,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1072 [2020-10-12 12:17:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:32,398 INFO L225 Difference]: With dead ends: 5487 [2020-10-12 12:17:32,398 INFO L226 Difference]: Without dead ends: 4228 [2020-10-12 12:17:32,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:17:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2020-10-12 12:17:32,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4142. [2020-10-12 12:17:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4142 states. [2020-10-12 12:17:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 6519 transitions. [2020-10-12 12:17:32,517 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 6519 transitions. Word has length 1072 [2020-10-12 12:17:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:32,519 INFO L479 AbstractCegarLoop]: Abstraction has 4142 states and 6519 transitions. [2020-10-12 12:17:32,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 12:17:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 6519 transitions. [2020-10-12 12:17:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2020-10-12 12:17:32,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:32,541 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:32,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 12:17:32,541 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:32,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:32,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1650503461, now seen corresponding path program 1 times [2020-10-12 12:17:32,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:32,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221379086] [2020-10-12 12:17:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:32,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:33,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:37,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:37,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1101 [2020-10-12 12:17:37,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:17:37,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 12:17:37,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:17:37,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:17:37,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-12 12:17:37,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:38,026 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:17:38,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:17:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:38,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:38,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:17:38,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 12:17:38,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:17:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:17:38,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:17:38,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:38,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:17:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:38,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:38,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:38,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:17:38,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:38,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-12 12:17:38,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:38,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:38,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:17:38,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:38,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:17:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:38,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:17:38,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 12:17:38,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:17:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 12:17:38,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:17:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:17:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:17:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 12:17:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:17:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 12:17:39,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221379086] [2020-10-12 12:17:39,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:17:39,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 12:17:39,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822342910] [2020-10-12 12:17:39,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:17:39,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:17:39,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:17:39,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:17:39,105 INFO L87 Difference]: Start difference. First operand 4142 states and 6519 transitions. Second operand 7 states. [2020-10-12 12:17:39,248 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:17:40,264 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 12:17:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:17:56,983 INFO L93 Difference]: Finished difference Result 10859 states and 18148 transitions. [2020-10-12 12:17:56,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:17:56,984 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1081 [2020-10-12 12:17:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:17:57,029 INFO L225 Difference]: With dead ends: 10859 [2020-10-12 12:17:57,030 INFO L226 Difference]: Without dead ends: 7477 [2020-10-12 12:17:57,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 12:17:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7477 states. [2020-10-12 12:17:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7477 to 7388. [2020-10-12 12:17:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7388 states. [2020-10-12 12:17:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7388 states to 7388 states and 11313 transitions. [2020-10-12 12:17:57,286 INFO L78 Accepts]: Start accepts. Automaton has 7388 states and 11313 transitions. Word has length 1081 [2020-10-12 12:17:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:17:57,286 INFO L479 AbstractCegarLoop]: Abstraction has 7388 states and 11313 transitions. [2020-10-12 12:17:57,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:17:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7388 states and 11313 transitions. [2020-10-12 12:17:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2020-10-12 12:17:57,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:17:57,324 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:17:57,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 12:17:57,324 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:17:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:17:57,325 INFO L82 PathProgramCache]: Analyzing trace with hash 318816397, now seen corresponding path program 1 times [2020-10-12 12:17:57,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:17:57,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358648141] [2020-10-12 12:17:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:17:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:17:57,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:17:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:02,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-12 12:18:02,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:18:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5143 [2020-10-12 12:18:02,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 12:18:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 12:18:02,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1027 [2020-10-12 12:18:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:03,668 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:03,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:03,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:03,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:18:03,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:03,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:03,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:03,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:03,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:03,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:03,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:03,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 12:18:03,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:03,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 12:18:03,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:18:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:18:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 12:18:03,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 12:18:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 12:18:04,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358648141] [2020-10-12 12:18:04,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:04,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:18:04,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674481793] [2020-10-12 12:18:04,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:18:04,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:04,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:18:04,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:18:04,965 INFO L87 Difference]: Start difference. First operand 7388 states and 11313 transitions. Second operand 7 states. [2020-10-12 12:18:05,104 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 12:18:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:20,906 INFO L93 Difference]: Finished difference Result 20489 states and 33060 transitions. [2020-10-12 12:18:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 12:18:20,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1088 [2020-10-12 12:18:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:20,967 INFO L225 Difference]: With dead ends: 20489 [2020-10-12 12:18:20,968 INFO L226 Difference]: Without dead ends: 13861 [2020-10-12 12:18:20,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 12:18:21,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13861 states. [2020-10-12 12:18:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13861 to 13831. [2020-10-12 12:18:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13831 states. [2020-10-12 12:18:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13831 states to 13831 states and 20490 transitions. [2020-10-12 12:18:21,375 INFO L78 Accepts]: Start accepts. Automaton has 13831 states and 20490 transitions. Word has length 1088 [2020-10-12 12:18:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:21,377 INFO L479 AbstractCegarLoop]: Abstraction has 13831 states and 20490 transitions. [2020-10-12 12:18:21,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:18:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 13831 states and 20490 transitions. [2020-10-12 12:18:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2020-10-12 12:18:21,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:21,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:21,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 12:18:21,436 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:21,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1021669240, now seen corresponding path program 1 times [2020-10-12 12:18:21,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:21,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700133347] [2020-10-12 12:18:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:21,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:26,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:26,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1123 [2020-10-12 12:18:26,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 12:18:26,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-12 12:18:26,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 12:18:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:18:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-12 12:18:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:18:27,109 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:27,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:27,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:27,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:27,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 12:18:27,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:18:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:27,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:27,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:27,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:27,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:27,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-12 12:18:27,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:27,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:18:27,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:18:27,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:18:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:27,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 12:18:27,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 12:18:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:18:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 12:18:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:27,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:27,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:18:27,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:27,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 12:18:27,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 12:18:27,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:27,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 12:18:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 99 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 12:18:28,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700133347] [2020-10-12 12:18:28,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:18:28,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 12:18:28,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595162951] [2020-10-12 12:18:28,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 12:18:28,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:18:28,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 12:18:28,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-12 12:18:28,791 INFO L87 Difference]: Start difference. First operand 13831 states and 20490 transitions. Second operand 9 states. [2020-10-12 12:18:28,959 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:18:30,381 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 12:18:31,123 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 12:18:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:18:52,557 INFO L93 Difference]: Finished difference Result 40548 states and 61424 transitions. [2020-10-12 12:18:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 12:18:52,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1101 [2020-10-12 12:18:52,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:18:52,685 INFO L225 Difference]: With dead ends: 40548 [2020-10-12 12:18:52,685 INFO L226 Difference]: Without dead ends: 27477 [2020-10-12 12:18:52,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-10-12 12:18:52,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27477 states. [2020-10-12 12:18:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27477 to 27002. [2020-10-12 12:18:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27002 states. [2020-10-12 12:18:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27002 states to 27002 states and 39831 transitions. [2020-10-12 12:18:53,584 INFO L78 Accepts]: Start accepts. Automaton has 27002 states and 39831 transitions. Word has length 1101 [2020-10-12 12:18:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:18:53,584 INFO L479 AbstractCegarLoop]: Abstraction has 27002 states and 39831 transitions. [2020-10-12 12:18:53,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 12:18:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 27002 states and 39831 transitions. [2020-10-12 12:18:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2020-10-12 12:18:53,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:18:53,692 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:18:53,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 12:18:53,693 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:18:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:18:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash 53549885, now seen corresponding path program 1 times [2020-10-12 12:18:53,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:18:53,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752403996] [2020-10-12 12:18:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:18:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:54,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:58,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:58,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1128 [2020-10-12 12:18:58,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 12:18:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 12:18:58,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 12:18:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 12:18:58,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 12:18:58,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:59,199 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 12:18:59,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 12:18:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:59,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:59,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 12:18:59,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 12:18:59,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 12:18:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 12:18:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 12:18:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:59,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 12:18:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:59,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:59,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 12:18:59,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 12:18:59,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 12:18:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 12:18:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 12:18:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:59,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 12:18:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:59,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 12:18:59,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 12:18:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 12:18:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:18:59,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-12 12:18:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:18:59,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:18:59,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 12:18:59,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 12:18:59,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 12:18:59,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 12:18:59,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 12:18:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 12:18:59,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 12:18:59,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 12:18:59,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 12:19:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 93 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 12:19:00,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752403996] [2020-10-12 12:19:00,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 12:19:00,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 12:19:00,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328220703] [2020-10-12 12:19:00,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 12:19:00,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 12:19:00,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 12:19:00,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 12:19:00,403 INFO L87 Difference]: Start difference. First operand 27002 states and 39831 transitions. Second operand 7 states. [2020-10-12 12:19:00,572 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 12:19:01,930 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 12:19:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 12:19:19,150 INFO L93 Difference]: Finished difference Result 67146 states and 100361 transitions. [2020-10-12 12:19:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 12:19:19,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1106 [2020-10-12 12:19:19,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 12:19:19,292 INFO L225 Difference]: With dead ends: 67146 [2020-10-12 12:19:19,292 INFO L226 Difference]: Without dead ends: 40904 [2020-10-12 12:19:19,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-12 12:19:19,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40904 states. [2020-10-12 12:19:20,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40904 to 40297. [2020-10-12 12:19:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40297 states. [2020-10-12 12:19:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40297 states to 40297 states and 59016 transitions. [2020-10-12 12:19:20,326 INFO L78 Accepts]: Start accepts. Automaton has 40297 states and 59016 transitions. Word has length 1106 [2020-10-12 12:19:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 12:19:20,326 INFO L479 AbstractCegarLoop]: Abstraction has 40297 states and 59016 transitions. [2020-10-12 12:19:20,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 12:19:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 40297 states and 59016 transitions. [2020-10-12 12:19:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2020-10-12 12:19:20,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 12:19:20,411 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:19:20,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 12:19:20,412 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 12:19:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 12:19:20,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2081735920, now seen corresponding path program 1 times [2020-10-12 12:19:20,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 12:19:20,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618483830] [2020-10-12 12:19:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 12:19:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 12:19:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 12:19:20,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking...