/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-04-30 23:05:59,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-30 23:05:59,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-30 23:05:59,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-30 23:05:59,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-30 23:05:59,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-30 23:05:59,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-30 23:05:59,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-30 23:05:59,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-30 23:05:59,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-30 23:05:59,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-30 23:05:59,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-30 23:05:59,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-30 23:05:59,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-30 23:05:59,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-30 23:05:59,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-30 23:05:59,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-30 23:05:59,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-30 23:05:59,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-30 23:05:59,694 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-30 23:05:59,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-30 23:05:59,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-30 23:05:59,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-30 23:05:59,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-30 23:05:59,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-30 23:05:59,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-30 23:05:59,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-30 23:05:59,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-30 23:05:59,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-04-30 23:05:59,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-30 23:05:59,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-30 23:05:59,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-30 23:05:59,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-30 23:05:59,769 INFO L138 SettingsManager]: * Use SBE=true [2021-04-30 23:05:59,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-30 23:05:59,769 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-30 23:05:59,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-30 23:05:59,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-30 23:05:59,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-30 23:05:59,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-30 23:05:59,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-30 23:05:59,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-30 23:05:59,770 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-30 23:05:59,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-30 23:05:59,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-30 23:05:59,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-30 23:05:59,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-30 23:05:59,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-30 23:05:59,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-30 23:05:59,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-30 23:05:59,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-30 23:05:59,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-30 23:05:59,771 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-30 23:05:59,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-30 23:05:59,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-30 23:05:59,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-30 23:05:59,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-04-30 23:05:59,772 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-30 23:06:00,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-30 23:06:00,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-30 23:06:00,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-30 23:06:00,051 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-30 23:06:00,052 INFO L275 PluginConnector]: CDTParser initialized [2021-04-30 23:06:00,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2021-04-30 23:06:00,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f91fa40/04e39e3586764a018e5f8fd2119176fd/FLAG0196e782f [2021-04-30 23:06:00,506 INFO L306 CDTParser]: Found 1 translation units. [2021-04-30 23:06:00,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2021-04-30 23:06:00,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f91fa40/04e39e3586764a018e5f8fd2119176fd/FLAG0196e782f [2021-04-30 23:06:00,883 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55f91fa40/04e39e3586764a018e5f8fd2119176fd [2021-04-30 23:06:00,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-30 23:06:00,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-30 23:06:00,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-30 23:06:00,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-30 23:06:00,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-30 23:06:00,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 11:06:00" (1/1) ... [2021-04-30 23:06:00,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3d458c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:00, skipping insertion in model container [2021-04-30 23:06:00,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.04 11:06:00" (1/1) ... [2021-04-30 23:06:00,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-30 23:06:00,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-30 23:06:01,009 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1126,1139] [2021-04-30 23:06:01,015 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1880,1893] [2021-04-30 23:06:01,017 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2401,2414] [2021-04-30 23:06:01,020 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3193,3206] [2021-04-30 23:06:01,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-30 23:06:01,026 INFO L203 MainTranslator]: Completed pre-run [2021-04-30 23:06:01,081 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1126,1139] [2021-04-30 23:06:01,085 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[1880,1893] [2021-04-30 23:06:01,086 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[2401,2414] [2021-04-30 23:06:01,089 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c[3193,3206] [2021-04-30 23:06:01,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-30 23:06:01,106 INFO L208 MainTranslator]: Completed translation [2021-04-30 23:06:01,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01 WrapperNode [2021-04-30 23:06:01,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-30 23:06:01,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-30 23:06:01,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-30 23:06:01,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-30 23:06:01,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... [2021-04-30 23:06:01,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... [2021-04-30 23:06:01,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... [2021-04-30 23:06:01,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... [2021-04-30 23:06:01,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... [2021-04-30 23:06:01,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... [2021-04-30 23:06:01,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... [2021-04-30 23:06:01,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-30 23:06:01,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-30 23:06:01,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-30 23:06:01,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-30 23:06:01,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-04-30 23:06:01,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-30 23:06:01,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-30 23:06:01,277 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-30 23:06:01,278 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-30 23:06:01,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-30 23:06:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-30 23:06:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-30 23:06:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-30 23:06:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-30 23:06:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-30 23:06:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-30 23:06:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-30 23:06:01,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-30 23:06:01,636 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-30 23:06:01,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 11:06:01 BoogieIcfgContainer [2021-04-30 23:06:01,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-30 23:06:01,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-30 23:06:01,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-30 23:06:01,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-30 23:06:01,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.04 11:06:00" (1/3) ... [2021-04-30 23:06:01,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e38ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 11:06:01, skipping insertion in model container [2021-04-30 23:06:01,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.04 11:06:01" (2/3) ... [2021-04-30 23:06:01,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79e38ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.04 11:06:01, skipping insertion in model container [2021-04-30 23:06:01,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.04 11:06:01" (3/3) ... [2021-04-30 23:06:01,641 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2021-04-30 23:06:01,647 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-30 23:06:01,651 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-04-30 23:06:01,662 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-30 23:06:01,684 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-30 23:06:01,684 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-30 23:06:01,684 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-30 23:06:01,684 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-30 23:06:01,684 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-30 23:06:01,685 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-30 23:06:01,685 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-30 23:06:01,685 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-30 23:06:01,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 37 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-30 23:06:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-30 23:06:01,707 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:06:01,708 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:06:01,708 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:06:01,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:06:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1265954152, now seen corresponding path program 1 times [2021-04-30 23:06:01,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:06:01,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103114472] [2021-04-30 23:06:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:06:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:01,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:01,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:01,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:01,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:06:01,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:01,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:06:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:01,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:01,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:01,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:06:01,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103114472] [2021-04-30 23:06:01,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103114472] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:06:01,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:06:01,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-30 23:06:01,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397385903] [2021-04-30 23:06:02,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-30 23:06:02,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:06:02,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-30 23:06:02,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-30 23:06:02,013 INFO L87 Difference]: Start difference. First operand has 42 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 37 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:06:02,163 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2021-04-30 23:06:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-30 23:06:02,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-04-30 23:06:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:06:02,171 INFO L225 Difference]: With dead ends: 56 [2021-04-30 23:06:02,171 INFO L226 Difference]: Without dead ends: 34 [2021-04-30 23:06:02,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-30 23:06:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-04-30 23:06:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-04-30 23:06:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-04-30 23:06:02,204 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 13 [2021-04-30 23:06:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:06:02,205 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-04-30 23:06:02,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-04-30 23:06:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-30 23:06:02,205 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:06:02,206 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:06:02,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-30 23:06:02,206 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:06:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:06:02,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1569720066, now seen corresponding path program 1 times [2021-04-30 23:06:02,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:06:02,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192865999] [2021-04-30 23:06:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:06:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:02,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:06:02,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:06:02,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:06:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:02,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:02,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:06:02,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192865999] [2021-04-30 23:06:02,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192865999] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:06:02,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:06:02,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-30 23:06:02,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641261162] [2021-04-30 23:06:02,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-30 23:06:02,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:06:02,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-30 23:06:02,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-30 23:06:02,318 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:06:02,401 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2021-04-30 23:06:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-04-30 23:06:02,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-30 23:06:02,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:06:02,402 INFO L225 Difference]: With dead ends: 53 [2021-04-30 23:06:02,402 INFO L226 Difference]: Without dead ends: 51 [2021-04-30 23:06:02,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-30 23:06:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-04-30 23:06:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2021-04-30 23:06:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 30 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2021-04-30 23:06:02,407 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2021-04-30 23:06:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:06:02,408 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2021-04-30 23:06:02,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,408 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2021-04-30 23:06:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-30 23:06:02,408 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:06:02,408 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:06:02,408 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-30 23:06:02,409 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:06:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:06:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1505043805, now seen corresponding path program 1 times [2021-04-30 23:06:02,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:06:02,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258291322] [2021-04-30 23:06:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:06:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:02,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-30 23:06:02,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:06:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:02,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:02,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:06:02,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258291322] [2021-04-30 23:06:02,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258291322] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:06:02,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:06:02,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-30 23:06:02,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985008576] [2021-04-30 23:06:02,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-30 23:06:02,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:06:02,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-30 23:06:02,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-30 23:06:02,465 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:06:02,536 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-04-30 23:06:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-30 23:06:02,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-30 23:06:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:06:02,537 INFO L225 Difference]: With dead ends: 62 [2021-04-30 23:06:02,537 INFO L226 Difference]: Without dead ends: 41 [2021-04-30 23:06:02,537 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-30 23:06:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-04-30 23:06:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2021-04-30 23:06:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-04-30 23:06:02,541 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2021-04-30 23:06:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:06:02,542 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-04-30 23:06:02,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-04-30 23:06:02,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-30 23:06:02,542 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:06:02,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:06:02,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-30 23:06:02,543 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:06:02,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:06:02,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1358532641, now seen corresponding path program 1 times [2021-04-30 23:06:02,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:06:02,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002141274] [2021-04-30 23:06:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:06:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:02,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-30 23:06:02,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:06:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:02,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:02,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:06:02,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002141274] [2021-04-30 23:06:02,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002141274] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:06:02,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:06:02,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-30 23:06:02,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7015956] [2021-04-30 23:06:02,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-30 23:06:02,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:06:02,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-30 23:06:02,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-30 23:06:02,591 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:06:02,636 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-04-30 23:06:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-30 23:06:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-04-30 23:06:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:06:02,637 INFO L225 Difference]: With dead ends: 56 [2021-04-30 23:06:02,637 INFO L226 Difference]: Without dead ends: 35 [2021-04-30 23:06:02,637 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-30 23:06:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-04-30 23:06:02,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2021-04-30 23:06:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-04-30 23:06:02,641 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2021-04-30 23:06:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:06:02,641 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-04-30 23:06:02,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-04-30 23:06:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-04-30 23:06:02,641 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:06:02,641 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:06:02,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-30 23:06:02,642 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:06:02,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:06:02,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1464846627, now seen corresponding path program 1 times [2021-04-30 23:06:02,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:06:02,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979008842] [2021-04-30 23:06:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:06:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:02,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:02,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-30 23:06:02,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:02,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-04-30 23:06:02,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 82.4 percent of original size [2021-04-30 23:06:02,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-04-30 23:06:02,790 INFO L142 QuantifierPusher]: treesize reduction 179, result has 29.2 percent of original size [2021-04-30 23:06:02,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-30 23:06:02,860 INFO L142 QuantifierPusher]: treesize reduction 66, result has 97.0 percent of original size [2021-04-30 23:06:02,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2159 [2021-04-30 23:06:03,160 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 88 [2021-04-30 23:06:03,197 INFO L142 QuantifierPusher]: treesize reduction 66, result has 97.0 percent of original size [2021-04-30 23:06:03,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2141 [2021-04-30 23:06:03,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-30 23:06:03,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:06:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:03,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:03,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:06:03,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979008842] [2021-04-30 23:06:03,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979008842] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:06:03,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:06:03,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-30 23:06:03,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948787972] [2021-04-30 23:06:03,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-30 23:06:03,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:06:03,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-30 23:06:03,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-04-30 23:06:03,284 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:06:03,555 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-04-30 23:06:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-30 23:06:03,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-04-30 23:06:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:06:03,557 INFO L225 Difference]: With dead ends: 47 [2021-04-30 23:06:03,557 INFO L226 Difference]: Without dead ends: 31 [2021-04-30 23:06:03,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 570.1ms TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-04-30 23:06:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-04-30 23:06:03,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-04-30 23:06:03,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-04-30 23:06:03,565 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2021-04-30 23:06:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:06:03,566 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-04-30 23:06:03,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-04-30 23:06:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-30 23:06:03,567 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:06:03,567 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:06:03,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-30 23:06:03,567 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:06:03,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:06:03,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1183527149, now seen corresponding path program 1 times [2021-04-30 23:06:03,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:06:03,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069739124] [2021-04-30 23:06:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:06:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:03,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:06:03,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-30 23:06:03,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-30 23:06:03,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-30 23:06:03,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:06:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:03,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:03,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:06:03,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069739124] [2021-04-30 23:06:03,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069739124] provided 1 perfect and 0 imperfect interpolant sequences [2021-04-30 23:06:03,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-30 23:06:03,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-30 23:06:03,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055253156] [2021-04-30 23:06:03,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-30 23:06:03,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:06:03,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-30 23:06:03,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-30 23:06:03,649 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:03,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:06:03,727 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-04-30 23:06:03,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-30 23:06:03,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-04-30 23:06:03,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:06:03,729 INFO L225 Difference]: With dead ends: 44 [2021-04-30 23:06:03,729 INFO L226 Difference]: Without dead ends: 42 [2021-04-30 23:06:03,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-04-30 23:06:03,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-04-30 23:06:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2021-04-30 23:06:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-04-30 23:06:03,738 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2021-04-30 23:06:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:06:03,738 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-04-30 23:06:03,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-04-30 23:06:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-04-30 23:06:03,739 INFO L511 BasicCegarLoop]: Found error trace [2021-04-30 23:06:03,739 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-30 23:06:03,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-30 23:06:03,739 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-30 23:06:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-30 23:06:03,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1919789033, now seen corresponding path program 1 times [2021-04-30 23:06:03,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-30 23:06:03,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134891453] [2021-04-30 23:06:03,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-30 23:06:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:03,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:06:03,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-30 23:06:03,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-04-30 23:06:03,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-30 23:06:03,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-04-30 23:06:03,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-30 23:06:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:03,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:03,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-04-30 23:06:03,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134891453] [2021-04-30 23:06:03,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134891453] provided 0 perfect and 1 imperfect interpolant sequences [2021-04-30 23:06:03,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109917836] [2021-04-30 23:06:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-30 23:06:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-30 23:06:03,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-30 23:06:03,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-30 23:06:03,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:03,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:03,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:06:04,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:06:04,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:06:04,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-30 23:06:04,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-30 23:06:04,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-30 23:06:04,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-04-30 23:06:04,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-30 23:06:04,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 66 [2021-04-30 23:06:04,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-30 23:06:04,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-30 23:06:04,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-30 23:06:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-30 23:06:04,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109917836] provided 0 perfect and 1 imperfect interpolant sequences [2021-04-30 23:06:04,101 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-30 23:06:04,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 8 [2021-04-30 23:06:04,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718295864] [2021-04-30 23:06:04,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-30 23:06:04,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-30 23:06:04,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-30 23:06:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-30 23:06:04,102 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:04,420 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-04-30 23:06:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-30 23:06:04,541 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-04-30 23:06:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-30 23:06:04,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-04-30 23:06:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-30 23:06:04,542 INFO L225 Difference]: With dead ends: 32 [2021-04-30 23:06:04,542 INFO L226 Difference]: Without dead ends: 0 [2021-04-30 23:06:04,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 335.6ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-04-30 23:06:04,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-30 23:06:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-30 23:06:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-30 23:06:04,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-30 23:06:04,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-04-30 23:06:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-30 23:06:04,543 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-30 23:06:04,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-30 23:06:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-30 23:06:04,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-30 23:06:04,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-04-30 23:06:04,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-30 23:06:04,982 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-04-30 23:06:04,982 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-04-30 23:06:04,982 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-04-30 23:06:04,982 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-04-30 23:06:04,982 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~__return_136~0 |old(~__return_136~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-04-30 23:06:04,982 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-04-30 23:06:04,982 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-04-30 23:06:04,982 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-30 23:06:04,982 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-30 23:06:04,982 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L97(lines 97 132) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L31(lines 31 147) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 167) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L60(lines 60 93) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 14 196) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L194 CegarLoopUtils]: At program point L151(lines 29 152) the Hoare annotation is: false [2021-04-30 23:06:04,983 INFO L194 CegarLoopUtils]: At program point L172(lines 26 185) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~2 0)) (<= main_~main__index1~0 (+ main_~main__index2~0 (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (- 1)) 4294967296) 4294967296) (* main_~main__index2~0 (- 1)) 99998) 4294967296)) 1)) (= main_~__VERIFIER_assert__cond~0 1)) [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L73(line 73) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L40(lines 40 139) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L201 CegarLoopUtils]: At program point L131(lines 97 132) the Hoare annotation is: true [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 109) no Hoare annotation was computed. [2021-04-30 23:06:04,983 INFO L198 CegarLoopUtils]: For program point L156(lines 156 184) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L57(lines 57 133) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L24(lines 24 190) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L194 CegarLoopUtils]: At program point L119(lines 98 128) the Hoare annotation is: (let ((.cse8 (div main_~main__index1~0 4294967296)) (.cse7 (div main_~main__index2~0 4294967296))) (let ((.cse9 (= main_~__VERIFIER_assert__cond~0 1)) (.cse0 (* 4294967296 .cse7)) (.cse1 (+ main_~main__index2~0 (* 4294967296 .cse8)))) (or (and (or (<= (+ main_~main__index1~0 .cse0) .cse1) (let ((.cse6 (select |#memory_int| |main_~#main__array~0.base|))) (let ((.cse5 (select .cse6 (+ (* main_~main__index1~0 4) |main_~#main__array~0.offset| (* .cse8 (- 17179869184))))) (.cse3 (select .cse6 (+ (* main_~main__index2~0 4) |main_~#main__array~0.offset| (* .cse7 (- 17179869184)))))) (let ((.cse4 (+ .cse5 (* 4294967296 (div .cse3 4294967296)))) (.cse2 (* 4294967296 (div .cse5 4294967296)))) (and (<= (+ .cse2 .cse3) .cse4) (< .cse4 (+ .cse2 .cse3 1))))))) (<= main_~main__index1~0 (+ main_~main__index2~0 (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (- 1)) 4294967296) 4294967296) (* main_~main__index2~0 (- 1)) 99998) 4294967296)) 1)) .cse9) (and (<= main_~main__index2~0 (+ .cse0 99999)) (not (= main_~__VERIFIER_assert__cond~2 0)) .cse9 (<= (+ main_~main__index1~0 .cse0 1) .cse1))))) [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L107(lines 107 120) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L165(lines 165 173) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 73) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L62(lines 62 88) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L29(lines 29 152) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L194 CegarLoopUtils]: At program point L87(lines 62 88) the Hoare annotation is: (and (not (= main_~main____CPAchecker_TMP_0~1 0)) (<= main_~main__index1~0 (+ main_~main__index2~0 (* 4294967296 (div (+ (* (div (+ main_~main__index1~0 (- 1)) 4294967296) 4294967296) (* main_~main__index2~0 (- 1)) 99998) 4294967296)) 1)) (= main_~__VERIFIER_assert__cond~0 1) (<= (+ main_~main__index1~0 (* 4294967296 (div main_~main__index2~0 4294967296)) 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296))))) [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L21(lines 21 195) no Hoare annotation was computed. [2021-04-30 23:06:04,984 INFO L198 CegarLoopUtils]: For program point L50(lines 50 138) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L194 CegarLoopUtils]: At program point L79(lines 46 139) the Hoare annotation is: (let ((.cse2 (* 4294967296 (div main_~main__index2~0 4294967296)))) (and (let ((.cse0 (<= main_~main__index2~0 (+ .cse2 99999))) (.cse1 (= main_~__VERIFIER_assert__cond~0 1))) (or (and (not (= main_~main____CPAchecker_TMP_0~1 0)) .cse0 .cse1 (not (= main_~__VERIFIER_assert__cond~1 0))) (and .cse0 .cse1 (= main_~main____CPAchecker_TMP_0~0 1)))) (<= (+ main_~main__index1~0 .cse2 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296)))))) [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 14 196) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point L42(line 42) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point L71(lines 71 80) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point L158(lines 158 179) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 14 196) the Hoare annotation is: (and (= |old(#length)| |#length|) (= ~__tmp_155_0~0 |old(~__tmp_155_0~0)|) (= |old(#valid)| |#valid|)) [2021-04-30 23:06:04,985 INFO L194 CegarLoopUtils]: At program point L92(lines 60 93) the Hoare annotation is: false [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point L26(lines 26 185) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L194 CegarLoopUtils]: At program point L146(lines 31 147) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div main_~main__index2~0 4294967296)))) (and (<= main_~main__index2~0 (+ .cse0 99999)) (= main_~main__loop_entered~0 0) (= main_~main____CPAchecker_TMP_0~0 1) (<= (+ main_~main__index1~0 .cse0 1) (+ main_~main__index2~0 (* 4294967296 (div main_~main__index1~0 4294967296)))))) [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point L109(line 109) no Hoare annotation was computed. [2021-04-30 23:06:04,985 INFO L198 CegarLoopUtils]: For program point L167(line 167) no Hoare annotation was computed. [2021-04-30 23:06:04,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.04 11:06:04 BoogieIcfgContainer [2021-04-30 23:06:04,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-30 23:06:04,998 INFO L168 Benchmark]: Toolchain (without parser) took 4109.28 ms. Allocated memory was 178.3 MB in the beginning and 255.9 MB in the end (delta: 77.6 MB). Free memory was 142.2 MB in the beginning and 131.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 88.7 MB. Max. memory is 8.0 GB. [2021-04-30 23:06:04,999 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 178.3 MB. Free memory is still 158.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-30 23:06:04,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.02 ms. Allocated memory is still 178.3 MB. Free memory was 142.0 MB in the beginning and 159.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-04-30 23:06:04,999 INFO L168 Benchmark]: Boogie Preprocessor took 37.18 ms. Allocated memory is still 178.3 MB. Free memory was 159.8 MB in the beginning and 157.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-04-30 23:06:04,999 INFO L168 Benchmark]: RCFGBuilder took 491.78 ms. Allocated memory is still 178.3 MB. Free memory was 157.7 MB in the beginning and 136.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-04-30 23:06:04,999 INFO L168 Benchmark]: TraceAbstraction took 3360.33 ms. Allocated memory was 178.3 MB in the beginning and 255.9 MB in the end (delta: 77.6 MB). Free memory was 135.7 MB in the beginning and 131.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 83.2 MB. Max. memory is 8.0 GB. [2021-04-30 23:06:05,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 178.3 MB. Free memory is still 158.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 216.02 ms. Allocated memory is still 178.3 MB. Free memory was 142.0 MB in the beginning and 159.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.18 ms. Allocated memory is still 178.3 MB. Free memory was 159.8 MB in the beginning and 157.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 491.78 ms. Allocated memory is still 178.3 MB. Free memory was 157.7 MB in the beginning and 136.2 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3360.33 ms. Allocated memory was 178.3 MB in the beginning and 255.9 MB in the end (delta: 77.6 MB). Free memory was 135.7 MB in the beginning and 131.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 83.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 109]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 167]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 73]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3061.9ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 12.8ms, AutomataDifference: 1171.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 237.7ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 196 SDtfs, 164 SDslu, 272 SDs, 0 SdLazy, 402 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 490.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1123.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 49.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 12 LocationsWithAnnotation, 12 PreInvPairs, 20 NumberOfFragments, 427 HoareAnnotationTreeSize, 12 FomulaSimplifications, 700 FormulaSimplificationTreeSizeReduction, 16.7ms HoareSimplificationTime, 12 FomulaSimplificationsInter, 143 FormulaSimplificationTreeSizeReductionInter, 214.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 33.5ms SsaConstructionTime, 185.6ms SatisfiabilityAnalysisTime, 1220.7ms InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 3385 SizeOfPredicates, 2 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (!(__VERIFIER_assert__cond == 0) && main__index1 <= main__index2 + 4294967296 * (((main__index1 + -1) / 4294967296 * 4294967296 + main__index2 * -1 + 99998) / 4294967296) + 1) && __VERIFIER_assert__cond == 1 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 98]: Loop Invariant Derived loop invariant: (((main__index1 + 4294967296 * (main__index2 / 4294967296) <= main__index2 + 4294967296 * (main__index1 / 4294967296) || (4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] <= unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) && unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] + 4294967296 * (unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] / 4294967296) < 4294967296 * (unknown-#memory_int-unknown[main__array][main__index1 * 4 + main__array + main__index1 / 4294967296 * -17179869184] / 4294967296) + unknown-#memory_int-unknown[main__array][main__index2 * 4 + main__array + main__index2 / 4294967296 * -17179869184] + 1)) && main__index1 <= main__index2 + 4294967296 * (((main__index1 + -1) / 4294967296 * 4294967296 + main__index2 * -1 + 99998) / 4294967296) + 1) && __VERIFIER_assert__cond == 1) || (((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && !(__VERIFIER_assert__cond == 0)) && __VERIFIER_assert__cond == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296)) - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: ((!(main____CPAchecker_TMP_0 == 0) && main__index1 <= main__index2 + 4294967296 * (((main__index1 + -1) / 4294967296 * 4294967296 + main__index2 * -1 + 99998) / 4294967296) + 1) && __VERIFIER_assert__cond == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && main__loop_entered == 0) && main____CPAchecker_TMP_0 == 1) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) - InvariantResult [Line: 97]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((!(main____CPAchecker_TMP_0 == 0) && main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999) && __VERIFIER_assert__cond == 1) && !(__VERIFIER_assert__cond == 0)) || ((main__index2 <= 4294967296 * (main__index2 / 4294967296) + 99999 && __VERIFIER_assert__cond == 1) && main____CPAchecker_TMP_0 == 1)) && main__index1 + 4294967296 * (main__index2 / 4294967296) + 1 <= main__index2 + 4294967296 * (main__index1 / 4294967296) RESULT: Ultimate proved your program to be correct! Received shutdown request...