/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/Mono1_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:51:54,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:51:54,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:51:54,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 23:51:54,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 23:51:54,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 23:51:54,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 23:51:54,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 23:51:54,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 23:51:54,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 23:51:54,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 23:51:54,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 23:51:54,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 23:51:54,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 23:51:54,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 23:51:54,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 23:51:54,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 23:51:54,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 23:51:54,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 23:51:54,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 23:51:54,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 23:51:54,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 23:51:54,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 23:51:54,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 23:51:54,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 23:51:54,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 23:51:54,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 23:51:54,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 23:51:54,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 23:51:54,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 23:51:54,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 23:51:54,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 23:51:54,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 23:51:54,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 23:51:54,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 23:51:54,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 23:51:54,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 23:51:54,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 23:51:54,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:51:54,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:51:54,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:51:54,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:51:54,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:51:54,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:51:54,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:51:54,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:51:54,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:51:54,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:51:54,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:51:54,554 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:51:54,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:51:54,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:51:54,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:51:54,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:51:54,555 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:51:54,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:51:54,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:51:54,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:51:54,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:51:54,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:51:54,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:51:54,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:51:54,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:51:54,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:51:54,556 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:51:54,556 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:51:54,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:51:54,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:51:54,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:51:54,805 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:51:54,806 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:51:54,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/Mono1_1-2.c [2021-05-02 23:51:54,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58f41464/46143de9718e437c9d7810947570ae8e/FLAGa74f849c7 [2021-05-02 23:51:55,174 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:51:55,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono1_1-2.c [2021-05-02 23:51:55,180 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58f41464/46143de9718e437c9d7810947570ae8e/FLAGa74f849c7 [2021-05-02 23:51:55,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58f41464/46143de9718e437c9d7810947570ae8e [2021-05-02 23:51:55,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:51:55,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:51:55,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:51:55,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:51:55,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:51:55,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56084ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55, skipping insertion in model container [2021-05-02 23:51:55,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:51:55,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:51:55,719 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono1_1-2.c[313,326] [2021-05-02 23:51:55,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:51:55,736 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:51:55,744 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/Mono1_1-2.c[313,326] [2021-05-02 23:51:55,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:51:55,758 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:51:55,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55 WrapperNode [2021-05-02 23:51:55,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:51:55,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:51:55,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:51:55,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:51:55,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (1/1) ... [2021-05-02 23:51:55,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:51:55,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:51:55,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:51:55,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:51:55,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (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 [2021-05-02 23:51:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:51:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:51:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:51:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:51:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:51:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:51:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:51:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:51:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:51:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:51:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:51:55,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:51:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:51:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:51:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:51:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:51:55,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:51:56,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:51:56,089 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:51:56,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:51:56 BoogieIcfgContainer [2021-05-02 23:51:56,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:51:56,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:51:56,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:51:56,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:51:56,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:51:55" (1/3) ... [2021-05-02 23:51:56,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bba2c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:51:56, skipping insertion in model container [2021-05-02 23:51:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:51:55" (2/3) ... [2021-05-02 23:51:56,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bba2c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:51:56, skipping insertion in model container [2021-05-02 23:51:56,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:51:56" (3/3) ... [2021-05-02 23:51:56,098 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono1_1-2.c [2021-05-02 23:51:56,103 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:51:56,106 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:51:56,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:51:56,141 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:51:56,141 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:51:56,141 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:51:56,141 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:51:56,141 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:51:56,141 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:51:56,142 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:51:56,142 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:51:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 23:51:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:51:56,159 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:51:56,159 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:51:56,160 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:51:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:51:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash 491760044, now seen corresponding path program 1 times [2021-05-02 23:51:56,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:51:56,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366187390] [2021-05-02 23:51:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:51:56,222 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:51:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:51:56,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:51:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:51:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:51:56,366 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:51:56,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366187390] [2021-05-02 23:51:56,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1366187390] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:51:56,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:51:56,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 23:51:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532852406] [2021-05-02 23:51:56,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 23:51:56,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:51:56,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 23:51:56,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:51:56,386 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:56,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:51:56,455 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-05-02 23:51:56,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:51:56,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 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 11 [2021-05-02 23:51:56,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:51:56,462 INFO L225 Difference]: With dead ends: 30 [2021-05-02 23:51:56,462 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 23:51:56,465 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:51:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 23:51:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 23:51:56,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-05-02 23:51:56,509 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2021-05-02 23:51:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:51:56,510 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-05-02 23:51:56,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-05-02 23:51:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:51:56,512 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:51:56,512 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:51:56,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:51:56,513 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:51:56,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:51:56,515 INFO L82 PathProgramCache]: Analyzing trace with hash 482524834, now seen corresponding path program 1 times [2021-05-02 23:51:56,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:51:56,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773464104] [2021-05-02 23:51:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:51:56,528 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:51:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:51:56,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:51:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:51:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:51:56,632 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:51:56,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773464104] [2021-05-02 23:51:56,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [773464104] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:51:56,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:51:56,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 23:51:56,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579043573] [2021-05-02 23:51:56,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 23:51:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:51:56,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 23:51:56,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 23:51:56,635 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:56,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:51:56,713 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-05-02 23:51:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 23:51:56,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 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 11 [2021-05-02 23:51:56,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:51:56,715 INFO L225 Difference]: With dead ends: 22 [2021-05-02 23:51:56,715 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 23:51:56,716 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 23:51:56,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 23:51:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 23:51:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-02 23:51:56,722 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-05-02 23:51:56,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:51:56,723 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-02 23:51:56,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-02 23:51:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 23:51:56,724 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:51:56,724 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:51:56,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:51:56,724 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:51:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:51:56,725 INFO L82 PathProgramCache]: Analyzing trace with hash 925229631, now seen corresponding path program 1 times [2021-05-02 23:51:56,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:51:56,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366166681] [2021-05-02 23:51:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:51:56,758 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_11 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_11} OutVars{main_~x~0=v_main_~x~0_11} AuxVars[] AssignedVars[] [2021-05-02 23:51:56,768 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:51:56,772 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:51:56,807 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:51:56,899 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:51:56,952 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:51:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:51:57,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:51:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:51:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:51:57,151 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:51:57,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366166681] [2021-05-02 23:51:57,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [366166681] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:51:57,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:51:57,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 23:51:57,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258381661] [2021-05-02 23:51:57,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 23:51:57,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:51:57,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 23:51:57,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-02 23:51:57,154 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:51:57,291 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-05-02 23:51:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 23:51:57,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 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 13 [2021-05-02 23:51:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:51:57,292 INFO L225 Difference]: With dead ends: 24 [2021-05-02 23:51:57,293 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 23:51:57,293 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:51:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 23:51:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 23:51:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-02 23:51:57,306 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-05-02 23:51:57,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:51:57,307 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-02 23:51:57,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:51:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-02 23:51:57,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 23:51:57,307 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:51:57,308 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:51:57,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 23:51:57,308 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:51:57,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:51:57,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1162777244, now seen corresponding path program 2 times [2021-05-02 23:51:57,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:51:57,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846531986] [2021-05-02 23:51:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:51:57,324 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_15 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_15} OutVars{main_~x~0=v_main_~x~0_15} AuxVars[] AssignedVars[] [2021-05-02 23:51:57,335 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:51:57,360 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:51:57,406 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:51:57,425 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:51:57,461 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:51:57,465 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_17 1) 4294967296) 100000000) (< (mod v_main_~x~0_17 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_17} OutVars{main_~x~0=v_main_~x~0_17} AuxVars[] AssignedVars[] [2021-05-02 23:51:57,472 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:51:57,493 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:51:57,506 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:01,535 WARN L205 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:05,550 WARN L205 SmtUtils]: Spent 4.01 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:52:07,667 WARN L205 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:52:07,706 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:07,720 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:07,757 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:07,791 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:08,000 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:08,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846531986] [2021-05-02 23:52:08,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1846531986] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:08,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:08,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 23:52:08,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353644088] [2021-05-02 23:52:08,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 23:52:08,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:08,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 23:52:08,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-02 23:52:08,002 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:08,126 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-05-02 23:52:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 23:52:08,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 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 15 [2021-05-02 23:52:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:08,128 INFO L225 Difference]: With dead ends: 26 [2021-05-02 23:52:08,128 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 23:52:08,129 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 160.3ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:52:08,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 23:52:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 23:52:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-05-02 23:52:08,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2021-05-02 23:52:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:08,134 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-05-02 23:52:08,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-05-02 23:52:08,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 23:52:08,135 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:08,135 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:08,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-02 23:52:08,136 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:08,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1812766649, now seen corresponding path program 3 times [2021-05-02 23:52:08,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:08,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93952751] [2021-05-02 23:52:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:08,143 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_22 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_22} OutVars{main_~x~0=v_main_~x~0_22} AuxVars[] AssignedVars[] [2021-05-02 23:52:08,145 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:08,155 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:08,179 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:08,200 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:08,230 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:08,233 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_24 4294967296) 10000000) (< (mod (+ v_main_~x~0_24 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_24} OutVars{main_~x~0=v_main_~x~0_24} AuxVars[] AssignedVars[] [2021-05-02 23:52:08,236 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:08,253 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:08,255 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:08,309 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:08,314 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:08,343 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:08,364 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:08,531 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:08,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93952751] [2021-05-02 23:52:08,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [93952751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:08,532 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:08,532 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-02 23:52:08,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009762181] [2021-05-02 23:52:08,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 23:52:08,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:08,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 23:52:08,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-02 23:52:08,537 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:08,703 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-05-02 23:52:08,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 23:52:08,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 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 17 [2021-05-02 23:52:08,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:08,708 INFO L225 Difference]: With dead ends: 28 [2021-05-02 23:52:08,708 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 23:52:08,709 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 197.0ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:52:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 23:52:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-05-02 23:52:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-05-02 23:52:08,717 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2021-05-02 23:52:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:08,717 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-05-02 23:52:08,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:08,718 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-05-02 23:52:08,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 23:52:08,719 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:08,719 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:08,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-02 23:52:08,719 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:08,719 INFO L82 PathProgramCache]: Analyzing trace with hash -612640362, now seen corresponding path program 4 times [2021-05-02 23:52:08,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:08,720 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678831698] [2021-05-02 23:52:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:08,728 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_30 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_30} OutVars{main_~x~0=v_main_~x~0_30} AuxVars[] AssignedVars[] [2021-05-02 23:52:08,732 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:08,744 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:08,760 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:08,781 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:08,799 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:08,803 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_32 1) 4294967296) 100000000) (< (mod v_main_~x~0_32 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_32} OutVars{main_~x~0=v_main_~x~0_32} AuxVars[] AssignedVars[] [2021-05-02 23:52:08,806 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:08,823 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:08,826 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:08,872 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:08,885 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:08,906 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:08,925 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:09,085 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:09,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678831698] [2021-05-02 23:52:09,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [678831698] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:09,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:09,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-02 23:52:09,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707845772] [2021-05-02 23:52:09,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 23:52:09,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:09,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 23:52:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-05-02 23:52:09,088 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:09,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:09,270 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-05-02 23:52:09,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 23:52:09,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 3 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 19 [2021-05-02 23:52:09,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:09,273 INFO L225 Difference]: With dead ends: 30 [2021-05-02 23:52:09,273 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 23:52:09,273 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 201.0ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-05-02 23:52:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 23:52:09,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-05-02 23:52:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-05-02 23:52:09,282 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2021-05-02 23:52:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:09,282 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-05-02 23:52:09,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-05-02 23:52:09,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 23:52:09,283 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:09,283 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:09,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-02 23:52:09,283 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:09,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:09,289 INFO L82 PathProgramCache]: Analyzing trace with hash 738463795, now seen corresponding path program 5 times [2021-05-02 23:52:09,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:09,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7420322] [2021-05-02 23:52:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:09,300 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_39 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_39} OutVars{main_~x~0=v_main_~x~0_39} AuxVars[] AssignedVars[] [2021-05-02 23:52:09,303 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:09,305 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:09,338 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:09,366 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:09,386 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:09,390 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_41 1) 4294967296) 100000000) (< (mod v_main_~x~0_41 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_41} OutVars{main_~x~0=v_main_~x~0_41} AuxVars[] AssignedVars[] [2021-05-02 23:52:09,393 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:09,394 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:09,397 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:09,585 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:09,614 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:09,618 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:09,667 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:09,699 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:09,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:09,881 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:09,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7420322] [2021-05-02 23:52:09,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [7420322] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:09,881 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:09,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-02 23:52:09,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985210201] [2021-05-02 23:52:09,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 23:52:09,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:09,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 23:52:09,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-02 23:52:09,882 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:10,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:10,074 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-02 23:52:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 23:52:10,075 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), 2 states have call successors, (3), 3 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 21 [2021-05-02 23:52:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:10,075 INFO L225 Difference]: With dead ends: 32 [2021-05-02 23:52:10,075 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 23:52:10,076 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 211.3ms TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-05-02 23:52:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 23:52:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 23:52:10,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:10,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-05-02 23:52:10,080 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2021-05-02 23:52:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:10,080 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-05-02 23:52:10,080 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), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:10,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-05-02 23:52:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 23:52:10,080 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:10,080 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:10,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-02 23:52:10,081 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:10,081 INFO L82 PathProgramCache]: Analyzing trace with hash 2069435280, now seen corresponding path program 6 times [2021-05-02 23:52:10,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:10,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845656954] [2021-05-02 23:52:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:10,085 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_49 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_49} OutVars{main_~x~0=v_main_~x~0_49} AuxVars[] AssignedVars[] [2021-05-02 23:52:10,087 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:10,095 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:10,114 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:10,131 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:10,150 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:10,153 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_51 4294967296) 10000000) (< (mod (+ v_main_~x~0_51 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_51} OutVars{main_~x~0=v_main_~x~0_51} AuxVars[] AssignedVars[] [2021-05-02 23:52:10,155 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:10,156 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:10,159 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:10,227 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:10,244 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:10,299 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:10,323 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:10,515 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:10,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845656954] [2021-05-02 23:52:10,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1845656954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:10,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:10,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-02 23:52:10,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215142733] [2021-05-02 23:52:10,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 23:52:10,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:10,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 23:52:10,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-05-02 23:52:10,517 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:10,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:10,776 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-05-02 23:52:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 23:52:10,777 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (3), 3 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 [2021-05-02 23:52:10,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:10,777 INFO L225 Difference]: With dead ends: 34 [2021-05-02 23:52:10,777 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 23:52:10,778 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 276.8ms TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-05-02 23:52:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 23:52:10,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 23:52:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-05-02 23:52:10,781 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2021-05-02 23:52:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:10,782 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-05-02 23:52:10,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-05-02 23:52:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 23:52:10,782 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:10,782 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:10,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-02 23:52:10,783 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:10,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1232778157, now seen corresponding path program 7 times [2021-05-02 23:52:10,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:10,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904532323] [2021-05-02 23:52:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:10,787 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_60 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_60} OutVars{main_~x~0=v_main_~x~0_60} AuxVars[] AssignedVars[] [2021-05-02 23:52:10,789 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:10,800 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:10,818 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:10,834 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:10,856 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:10,858 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_62 4294967296) 10000000) (< (mod (+ v_main_~x~0_62 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_62} OutVars{main_~x~0=v_main_~x~0_62} AuxVars[] AssignedVars[] [2021-05-02 23:52:10,861 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:10,862 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:10,864 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:10,980 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:10,985 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:11,024 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:11,050 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:11,234 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:11,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904532323] [2021-05-02 23:52:11,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [904532323] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:11,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:11,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-02 23:52:11,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103444726] [2021-05-02 23:52:11,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 23:52:11,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:11,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 23:52:11,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 23:52:11,236 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:11,485 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-05-02 23:52:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 23:52:11,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 3 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 25 [2021-05-02 23:52:11,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:11,486 INFO L225 Difference]: With dead ends: 36 [2021-05-02 23:52:11,486 INFO L226 Difference]: Without dead ends: 29 [2021-05-02 23:52:11,486 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 278.0ms TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-05-02 23:52:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-02 23:52:11,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-05-02 23:52:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-05-02 23:52:11,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 25 [2021-05-02 23:52:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:11,490 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-05-02 23:52:11,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-05-02 23:52:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 23:52:11,491 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:11,491 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:11,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-02 23:52:11,491 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:11,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:11,492 INFO L82 PathProgramCache]: Analyzing trace with hash 364167306, now seen corresponding path program 8 times [2021-05-02 23:52:11,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:11,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570479770] [2021-05-02 23:52:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:11,496 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_72 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_72} OutVars{main_~x~0=v_main_~x~0_72} AuxVars[] AssignedVars[] [2021-05-02 23:52:11,497 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:11,498 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:11,515 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:11,539 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:11,558 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:11,560 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_74 4294967296) 10000000) (< (mod (+ v_main_~x~0_74 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_74} OutVars{main_~x~0=v_main_~x~0_74} AuxVars[] AssignedVars[] [2021-05-02 23:52:11,562 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:11,563 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:11,574 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:11,842 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:11,893 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:11,897 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:11,947 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:11,965 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:12,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:12,180 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:12,180 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570479770] [2021-05-02 23:52:12,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [570479770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:12,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:12,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 23:52:12,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503385871] [2021-05-02 23:52:12,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 23:52:12,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:12,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 23:52:12,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-05-02 23:52:12,182 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:12,522 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-05-02 23:52:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 23:52:12,522 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (3), 3 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 27 [2021-05-02 23:52:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:12,523 INFO L225 Difference]: With dead ends: 38 [2021-05-02 23:52:12,523 INFO L226 Difference]: Without dead ends: 31 [2021-05-02 23:52:12,523 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 367.1ms TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:52:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-02 23:52:12,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-05-02 23:52:12,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:12,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-05-02 23:52:12,527 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2021-05-02 23:52:12,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:12,527 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-05-02 23:52:12,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-05-02 23:52:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 23:52:12,528 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:12,528 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:12,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-02 23:52:12,528 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:12,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:12,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1147205081, now seen corresponding path program 9 times [2021-05-02 23:52:12,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:12,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [441469677] [2021-05-02 23:52:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:12,534 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_85 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_85} OutVars{main_~x~0=v_main_~x~0_85} AuxVars[] AssignedVars[] [2021-05-02 23:52:12,536 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:12,543 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:12,556 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:12,567 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:12,586 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:12,588 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_87 4294967296) 10000000) (< (mod (+ v_main_~x~0_87 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_87} OutVars{main_~x~0=v_main_~x~0_87} AuxVars[] AssignedVars[] [2021-05-02 23:52:12,591 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:12,604 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:12,606 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:12,831 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:12,834 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:12,838 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:12,882 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:12,900 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:12,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:13,138 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:13,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [441469677] [2021-05-02 23:52:13,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [441469677] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:13,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:13,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-02 23:52:13,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237916377] [2021-05-02 23:52:13,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 23:52:13,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:13,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 23:52:13,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-05-02 23:52:13,140 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:13,513 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-05-02 23:52:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 23:52:13,513 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (3), 3 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 29 [2021-05-02 23:52:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:13,514 INFO L225 Difference]: With dead ends: 40 [2021-05-02 23:52:13,514 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 23:52:13,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 399.0ms TimeCoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-05-02 23:52:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 23:52:13,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 23:52:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-05-02 23:52:13,518 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2021-05-02 23:52:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:13,518 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-05-02 23:52:13,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-05-02 23:52:13,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 23:52:13,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:13,519 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:13,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-02 23:52:13,519 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:13,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:13,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1877122940, now seen corresponding path program 10 times [2021-05-02 23:52:13,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:13,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507492482] [2021-05-02 23:52:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:13,525 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_99 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_99} OutVars{main_~x~0=v_main_~x~0_99} AuxVars[] AssignedVars[] [2021-05-02 23:52:13,526 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:13,527 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:13,542 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:13,562 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:13,582 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:13,587 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_101 1) 4294967296) 100000000) (< (mod v_main_~x~0_101 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_101} OutVars{main_~x~0=v_main_~x~0_101} AuxVars[] AssignedVars[] [2021-05-02 23:52:13,590 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:13,590 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:13,593 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:13,708 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:13,714 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:13,745 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:13,764 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:13,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:14,039 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:14,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507492482] [2021-05-02 23:52:14,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [507492482] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:14,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:14,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-02 23:52:14,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797281769] [2021-05-02 23:52:14,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 23:52:14,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:14,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 23:52:14,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-05-02 23:52:14,041 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:14,450 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-05-02 23:52:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 23:52:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (3), 3 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 31 [2021-05-02 23:52:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:14,451 INFO L225 Difference]: With dead ends: 42 [2021-05-02 23:52:14,452 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 23:52:14,452 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 6 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 469.1ms TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2021-05-02 23:52:14,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 23:52:14,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 23:52:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-05-02 23:52:14,456 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2021-05-02 23:52:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:14,456 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-05-02 23:52:14,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-05-02 23:52:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 23:52:14,457 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:14,457 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:14,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-02 23:52:14,457 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:14,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:14,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1046451105, now seen corresponding path program 11 times [2021-05-02 23:52:14,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:14,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916607743] [2021-05-02 23:52:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:14,465 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_114 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_114} OutVars{main_~x~0=v_main_~x~0_114} AuxVars[] AssignedVars[] [2021-05-02 23:52:14,467 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:14,468 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:14,482 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:14,498 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:14,521 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:14,523 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_116 4294967296) 10000000) (< (mod (+ v_main_~x~0_116 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_116} OutVars{main_~x~0=v_main_~x~0_116} AuxVars[] AssignedVars[] [2021-05-02 23:52:14,525 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:14,525 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:14,527 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:16,932 WARN L205 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:52:16,956 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:16,960 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:16,998 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:17,017 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:17,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:17,300 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:17,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916607743] [2021-05-02 23:52:17,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [916607743] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:17,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:17,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-02 23:52:17,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104066557] [2021-05-02 23:52:17,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 23:52:17,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:17,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 23:52:17,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-05-02 23:52:17,302 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:17,762 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2021-05-02 23:52:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 23:52:17,762 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 2 states have call successors, (3), 3 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 33 [2021-05-02 23:52:17,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:17,763 INFO L225 Difference]: With dead ends: 44 [2021-05-02 23:52:17,763 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 23:52:17,764 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 504.0ms TimeCoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2021-05-02 23:52:17,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 23:52:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-05-02 23:52:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:17,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-05-02 23:52:17,768 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2021-05-02 23:52:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:17,768 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-05-02 23:52:17,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 14 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:17,768 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-05-02 23:52:17,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 23:52:17,768 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:17,769 INFO L523 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:17,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-02 23:52:17,769 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:17,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1692496766, now seen corresponding path program 12 times [2021-05-02 23:52:17,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:17,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807707264] [2021-05-02 23:52:17,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:17,774 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_130 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_130} OutVars{main_~x~0=v_main_~x~0_130} AuxVars[] AssignedVars[] [2021-05-02 23:52:17,776 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:17,776 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:17,795 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:17,811 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:17,831 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:17,833 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_132 1) 4294967296) 100000000) (< (mod v_main_~x~0_132 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_132} OutVars{main_~x~0=v_main_~x~0_132} AuxVars[] AssignedVars[] [2021-05-02 23:52:17,834 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:17,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:17,861 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:17,953 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:17,959 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:17,985 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:18,003 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:18,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:18,309 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:18,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807707264] [2021-05-02 23:52:18,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [807707264] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:18,310 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:18,310 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-02 23:52:18,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070211511] [2021-05-02 23:52:18,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 23:52:18,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:18,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 23:52:18,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-05-02 23:52:18,311 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:18,830 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-05-02 23:52:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 23:52:18,831 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (3), 3 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 35 [2021-05-02 23:52:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:18,831 INFO L225 Difference]: With dead ends: 46 [2021-05-02 23:52:18,831 INFO L226 Difference]: Without dead ends: 39 [2021-05-02 23:52:18,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 6 SyntacticMatches, 14 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 548.2ms TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2021-05-02 23:52:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-02 23:52:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-05-02 23:52:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-05-02 23:52:18,836 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2021-05-02 23:52:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:18,837 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-05-02 23:52:18,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:18,837 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-05-02 23:52:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 23:52:18,837 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:18,837 INFO L523 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:18,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-02 23:52:18,838 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:18,838 INFO L82 PathProgramCache]: Analyzing trace with hash -227880933, now seen corresponding path program 13 times [2021-05-02 23:52:18,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:18,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126125591] [2021-05-02 23:52:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:18,843 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_147 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_147} OutVars{main_~x~0=v_main_~x~0_147} AuxVars[] AssignedVars[] [2021-05-02 23:52:18,844 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:18,851 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:18,867 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:18,889 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:18,908 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:18,909 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_149 4294967296) 10000000) (< (mod (+ v_main_~x~0_149 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_149} OutVars{main_~x~0=v_main_~x~0_149} AuxVars[] AssignedVars[] [2021-05-02 23:52:18,911 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:18,924 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:18,926 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:19,010 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:19,015 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:19,033 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:19,050 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:19,363 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:19,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126125591] [2021-05-02 23:52:19,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [126125591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:19,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:19,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-02 23:52:19,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260170101] [2021-05-02 23:52:19,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 23:52:19,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:19,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 23:52:19,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-05-02 23:52:19,365 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:19,939 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-05-02 23:52:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 23:52:19,939 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 2 states have call successors, (3), 3 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 37 [2021-05-02 23:52:19,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:19,940 INFO L225 Difference]: With dead ends: 48 [2021-05-02 23:52:19,940 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 23:52:19,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 15 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 590.7ms TimeCoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 23:52:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 23:52:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 23:52:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:19,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-05-02 23:52:19,945 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2021-05-02 23:52:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:19,945 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-05-02 23:52:19,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 16 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-05-02 23:52:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 23:52:19,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:19,946 INFO L523 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:19,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-02 23:52:19,946 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:19,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:19,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1125087608, now seen corresponding path program 14 times [2021-05-02 23:52:19,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:19,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871541696] [2021-05-02 23:52:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:19,951 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_165 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_165} OutVars{main_~x~0=v_main_~x~0_165} AuxVars[] AssignedVars[] [2021-05-02 23:52:19,953 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:19,954 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:19,968 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:19,991 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:20,012 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:20,016 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_167 4294967296) 10000000) (< (mod (+ v_main_~x~0_167 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_167} OutVars{main_~x~0=v_main_~x~0_167} AuxVars[] AssignedVars[] [2021-05-02 23:52:20,018 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:20,018 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:20,020 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:21,039 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:21,059 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:21,062 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:21,094 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:21,111 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:21,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:21,461 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:21,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871541696] [2021-05-02 23:52:21,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [871541696] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:21,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:21,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-02 23:52:21,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815379852] [2021-05-02 23:52:21,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 23:52:21,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:21,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 23:52:21,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-05-02 23:52:21,463 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:22,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:22,017 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-05-02 23:52:22,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 23:52:22,033 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 3 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 39 [2021-05-02 23:52:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:22,034 INFO L225 Difference]: With dead ends: 50 [2021-05-02 23:52:22,034 INFO L226 Difference]: Without dead ends: 43 [2021-05-02 23:52:22,035 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 626.1ms TimeCoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 23:52:22,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-02 23:52:22,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-02 23:52:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:22,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-05-02 23:52:22,039 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2021-05-02 23:52:22,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:22,039 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-05-02 23:52:22,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 17 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-05-02 23:52:22,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 23:52:22,040 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:22,040 INFO L523 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:22,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-02 23:52:22,040 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:22,040 INFO L82 PathProgramCache]: Analyzing trace with hash -47235179, now seen corresponding path program 15 times [2021-05-02 23:52:22,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:22,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612599996] [2021-05-02 23:52:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:22,052 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_184 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_184} OutVars{main_~x~0=v_main_~x~0_184} AuxVars[] AssignedVars[] [2021-05-02 23:52:22,053 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:22,060 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:22,073 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:22,083 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:22,100 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:22,101 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_186 4294967296) 10000000) (< (mod (+ v_main_~x~0_186 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_186} OutVars{main_~x~0=v_main_~x~0_186} AuxVars[] AssignedVars[] [2021-05-02 23:52:22,103 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:22,113 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:22,115 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:22,230 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:22,243 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:22,273 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:22,293 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:22,673 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:22,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612599996] [2021-05-02 23:52:22,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1612599996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:22,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:22,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-02 23:52:22,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991208335] [2021-05-02 23:52:22,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 23:52:22,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:22,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 23:52:22,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-05-02 23:52:22,674 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:23,354 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-05-02 23:52:23,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 23:52:23,354 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (3), 3 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 41 [2021-05-02 23:52:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:23,355 INFO L225 Difference]: With dead ends: 52 [2021-05-02 23:52:23,355 INFO L226 Difference]: Without dead ends: 45 [2021-05-02 23:52:23,356 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 6 SyntacticMatches, 17 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 716.9ms TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 23:52:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-02 23:52:23,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-05-02 23:52:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:23,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-05-02 23:52:23,360 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 41 [2021-05-02 23:52:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:23,360 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-05-02 23:52:23,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:23,360 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-05-02 23:52:23,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 23:52:23,361 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:23,361 INFO L523 BasicCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:23,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-02 23:52:23,361 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:23,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:23,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1368001934, now seen corresponding path program 16 times [2021-05-02 23:52:23,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:23,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676460533] [2021-05-02 23:52:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:23,372 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_204 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_204} OutVars{main_~x~0=v_main_~x~0_204} AuxVars[] AssignedVars[] [2021-05-02 23:52:23,373 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:23,380 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:23,406 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:23,418 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:23,436 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:23,438 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_206 1) 4294967296) 100000000) (< (mod v_main_~x~0_206 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_206} OutVars{main_~x~0=v_main_~x~0_206} AuxVars[] AssignedVars[] [2021-05-02 23:52:23,441 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:23,453 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:23,455 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:23,699 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:23,754 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:23,786 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:25,808 WARN L205 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 7 [2021-05-02 23:52:25,816 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:25,858 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:26,290 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:26,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676460533] [2021-05-02 23:52:26,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1676460533] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:26,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:26,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-02 23:52:26,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803271444] [2021-05-02 23:52:26,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 23:52:26,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:26,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 23:52:26,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-05-02 23:52:26,291 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:27,008 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-05-02 23:52:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 23:52:27,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (3), 3 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 43 [2021-05-02 23:52:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:27,009 INFO L225 Difference]: With dead ends: 54 [2021-05-02 23:52:27,009 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 23:52:27,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 7 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 783.0ms TimeCoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 23:52:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 23:52:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-02 23:52:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-05-02 23:52:27,014 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2021-05-02 23:52:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:27,014 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-05-02 23:52:27,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:27,015 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-05-02 23:52:27,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 23:52:27,015 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:27,015 INFO L523 BasicCegarLoop]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:27,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-02 23:52:27,015 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:27,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:27,016 INFO L82 PathProgramCache]: Analyzing trace with hash 685466127, now seen corresponding path program 17 times [2021-05-02 23:52:27,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:27,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082207904] [2021-05-02 23:52:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:27,024 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_225 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_225} OutVars{main_~x~0=v_main_~x~0_225} AuxVars[] AssignedVars[] [2021-05-02 23:52:27,025 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:27,025 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:27,044 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:27,061 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:27,092 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:27,093 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_227 1) 4294967296) 100000000) (< (mod v_main_~x~0_227 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_227} OutVars{main_~x~0=v_main_~x~0_227} AuxVars[] AssignedVars[] [2021-05-02 23:52:27,095 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:27,096 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:27,097 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:29,115 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:52:29,613 WARN L205 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:52:29,632 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:29,638 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:29,667 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:29,685 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:30,150 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:30,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082207904] [2021-05-02 23:52:30,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2082207904] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:30,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:30,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-02 23:52:30,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144744952] [2021-05-02 23:52:30,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 23:52:30,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:30,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 23:52:30,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-05-02 23:52:30,152 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:30,915 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-05-02 23:52:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 23:52:30,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (3), 3 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 45 [2021-05-02 23:52:30,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:30,916 INFO L225 Difference]: With dead ends: 56 [2021-05-02 23:52:30,917 INFO L226 Difference]: Without dead ends: 49 [2021-05-02 23:52:30,917 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 19 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 849.7ms TimeCoverageRelationStatistics Valid=153, Invalid=1487, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 23:52:30,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-02 23:52:30,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-05-02 23:52:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-05-02 23:52:30,922 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2021-05-02 23:52:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:30,922 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-05-02 23:52:30,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-05-02 23:52:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 23:52:30,922 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:30,922 INFO L523 BasicCegarLoop]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:30,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-02 23:52:30,923 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:30,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1616683412, now seen corresponding path program 18 times [2021-05-02 23:52:30,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:30,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284133678] [2021-05-02 23:52:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:30,932 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_247 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_247} OutVars{main_~x~0=v_main_~x~0_247} AuxVars[] AssignedVars[] [2021-05-02 23:52:30,933 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:30,942 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:30,955 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:30,967 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:30,986 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:30,992 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_249 4294967296) 10000000) (< (mod (+ v_main_~x~0_249 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_249} OutVars{main_~x~0=v_main_~x~0_249} AuxVars[] AssignedVars[] [2021-05-02 23:52:30,993 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:31,005 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:31,008 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:31,912 WARN L205 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:52:31,930 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:31,933 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:31,961 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:31,978 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:32,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:32,505 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:32,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284133678] [2021-05-02 23:52:32,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1284133678] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:32,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:32,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-02 23:52:32,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124189488] [2021-05-02 23:52:32,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 23:52:32,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:32,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 23:52:32,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2021-05-02 23:52:32,507 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:33,351 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2021-05-02 23:52:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 23:52:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (3), 3 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 47 [2021-05-02 23:52:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:33,352 INFO L225 Difference]: With dead ends: 58 [2021-05-02 23:52:33,352 INFO L226 Difference]: Without dead ends: 51 [2021-05-02 23:52:33,353 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 6 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 911.2ms TimeCoverageRelationStatistics Valid=161, Invalid=1645, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 23:52:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-02 23:52:33,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-05-02 23:52:33,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:33,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-05-02 23:52:33,357 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2021-05-02 23:52:33,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:33,358 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-05-02 23:52:33,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 21 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-05-02 23:52:33,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 23:52:33,358 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:33,358 INFO L523 BasicCegarLoop]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:33,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-02 23:52:33,358 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:33,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2074232951, now seen corresponding path program 19 times [2021-05-02 23:52:33,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:33,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237937618] [2021-05-02 23:52:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:33,363 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_270 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_270} OutVars{main_~x~0=v_main_~x~0_270} AuxVars[] AssignedVars[] [2021-05-02 23:52:33,364 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:33,365 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:33,377 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:33,395 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:33,413 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:33,423 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_272 1) 4294967296) 100000000) (< (mod v_main_~x~0_272 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_272} OutVars{main_~x~0=v_main_~x~0_272} AuxVars[] AssignedVars[] [2021-05-02 23:52:33,427 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:33,428 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:33,431 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:33,764 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:52:33,791 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:33,799 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:33,835 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:33,859 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:33,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:34,347 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:34,348 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237937618] [2021-05-02 23:52:34,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [237937618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:34,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:34,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-02 23:52:34,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271470027] [2021-05-02 23:52:34,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 23:52:34,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:34,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 23:52:34,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-05-02 23:52:34,349 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:35,231 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2021-05-02 23:52:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 23:52:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (3), 3 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 49 [2021-05-02 23:52:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:35,232 INFO L225 Difference]: With dead ends: 60 [2021-05-02 23:52:35,232 INFO L226 Difference]: Without dead ends: 53 [2021-05-02 23:52:35,233 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 7 SyntacticMatches, 20 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 938.0ms TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:52:35,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-02 23:52:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-05-02 23:52:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-05-02 23:52:35,237 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 49 [2021-05-02 23:52:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:35,237 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-05-02 23:52:35,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-05-02 23:52:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 23:52:35,238 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:35,238 INFO L523 BasicCegarLoop]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:35,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-02 23:52:35,238 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:35,239 INFO L82 PathProgramCache]: Analyzing trace with hash 602291558, now seen corresponding path program 20 times [2021-05-02 23:52:35,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:35,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391524650] [2021-05-02 23:52:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:35,243 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_294 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_294} OutVars{main_~x~0=v_main_~x~0_294} AuxVars[] AssignedVars[] [2021-05-02 23:52:35,244 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:35,245 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:35,260 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:35,278 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:35,294 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:35,295 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_296 4294967296) 10000000) (< (mod (+ v_main_~x~0_296 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_296} OutVars{main_~x~0=v_main_~x~0_296} AuxVars[] AssignedVars[] [2021-05-02 23:52:35,296 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:35,308 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:35,309 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:37,507 WARN L205 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:52:37,534 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:37,542 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:37,561 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:37,578 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:37,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:37,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:38,128 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:38,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391524650] [2021-05-02 23:52:38,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [391524650] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:38,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:38,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-02 23:52:38,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346580593] [2021-05-02 23:52:38,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 23:52:38,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:38,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 23:52:38,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2021-05-02 23:52:38,130 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:39,048 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2021-05-02 23:52:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 23:52:39,049 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 2 states have call successors, (3), 3 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 51 [2021-05-02 23:52:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:39,051 INFO L225 Difference]: With dead ends: 62 [2021-05-02 23:52:39,051 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 23:52:39,052 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 6 SyntacticMatches, 22 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1022.1ms TimeCoverageRelationStatistics Valid=177, Invalid=1985, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 23:52:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 23:52:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-05-02 23:52:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2021-05-02 23:52:39,056 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2021-05-02 23:52:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:39,057 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2021-05-02 23:52:39,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:39,057 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2021-05-02 23:52:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 23:52:39,057 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:39,057 INFO L523 BasicCegarLoop]: trace histogram [21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:39,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-02 23:52:39,058 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:39,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:39,058 INFO L82 PathProgramCache]: Analyzing trace with hash 56934403, now seen corresponding path program 21 times [2021-05-02 23:52:39,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:39,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013266990] [2021-05-02 23:52:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:39,062 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_319 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_319} OutVars{main_~x~0=v_main_~x~0_319} AuxVars[] AssignedVars[] [2021-05-02 23:52:39,063 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:39,064 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:39,081 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:39,099 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:39,119 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:39,120 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_321 4294967296) 10000000) (< (mod (+ v_main_~x~0_321 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_321} OutVars{main_~x~0=v_main_~x~0_321} AuxVars[] AssignedVars[] [2021-05-02 23:52:39,121 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:39,133 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:39,135 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:39,220 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:39,228 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:39,255 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:39,276 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:39,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:39,887 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:39,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013266990] [2021-05-02 23:52:39,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1013266990] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:39,888 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:39,888 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-02 23:52:39,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326152748] [2021-05-02 23:52:39,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 23:52:39,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:39,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 23:52:39,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2021-05-02 23:52:39,889 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:40,903 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-05-02 23:52:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 23:52:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (3), 3 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 53 [2021-05-02 23:52:40,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:40,904 INFO L225 Difference]: With dead ends: 64 [2021-05-02 23:52:40,904 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 23:52:40,905 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 22 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1118.1ms TimeCoverageRelationStatistics Valid=185, Invalid=2167, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 23:52:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 23:52:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-05-02 23:52:40,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-05-02 23:52:40,911 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2021-05-02 23:52:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:40,911 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-05-02 23:52:40,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 24 states have internal predecessors, (49), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-05-02 23:52:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 23:52:40,912 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:40,912 INFO L523 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:40,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-02 23:52:40,912 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:40,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash -45281440, now seen corresponding path program 22 times [2021-05-02 23:52:40,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:40,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481709770] [2021-05-02 23:52:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:40,917 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_345 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_345} OutVars{main_~x~0=v_main_~x~0_345} AuxVars[] AssignedVars[] [2021-05-02 23:52:40,922 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:40,923 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:40,938 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:40,957 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:40,974 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:40,975 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_347 4294967296) 10000000) (< (mod (+ v_main_~x~0_347 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_347} OutVars{main_~x~0=v_main_~x~0_347} AuxVars[] AssignedVars[] [2021-05-02 23:52:40,977 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:40,978 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:40,979 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:41,101 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:41,105 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:41,457 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 1 [2021-05-02 23:52:41,467 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:41,486 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:41,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:42,143 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:42,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481709770] [2021-05-02 23:52:42,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1481709770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:42,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:42,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-02 23:52:42,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045633956] [2021-05-02 23:52:42,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 23:52:42,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:42,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 23:52:42,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2021-05-02 23:52:42,145 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:43,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:43,299 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2021-05-02 23:52:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 23:52:43,299 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (3), 3 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 55 [2021-05-02 23:52:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:43,300 INFO L225 Difference]: With dead ends: 66 [2021-05-02 23:52:43,300 INFO L226 Difference]: Without dead ends: 59 [2021-05-02 23:52:43,301 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 6 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1238.0ms TimeCoverageRelationStatistics Valid=193, Invalid=2357, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:52:43,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-02 23:52:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-05-02 23:52:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-05-02 23:52:43,305 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2021-05-02 23:52:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:43,306 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-05-02 23:52:43,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:43,306 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-05-02 23:52:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 23:52:43,306 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:43,306 INFO L523 BasicCegarLoop]: trace histogram [23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:43,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-02 23:52:43,306 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:43,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:43,307 INFO L82 PathProgramCache]: Analyzing trace with hash 509541245, now seen corresponding path program 23 times [2021-05-02 23:52:43,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:43,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672487425] [2021-05-02 23:52:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:43,311 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_372 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_372} OutVars{main_~x~0=v_main_~x~0_372} AuxVars[] AssignedVars[] [2021-05-02 23:52:43,313 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:43,314 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:43,325 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:43,341 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:43,362 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:43,363 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_374 4294967296) 10000000) (< (mod (+ v_main_~x~0_374 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_374} OutVars{main_~x~0=v_main_~x~0_374} AuxVars[] AssignedVars[] [2021-05-02 23:52:43,364 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:43,365 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:43,367 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:44,008 WARN L205 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:44,064 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:44,070 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:44,099 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:44,114 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:44,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:44,885 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:44,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672487425] [2021-05-02 23:52:44,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [672487425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:44,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:44,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-02 23:52:44,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499545162] [2021-05-02 23:52:44,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 23:52:44,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:44,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 23:52:44,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2021-05-02 23:52:44,887 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:46,045 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-05-02 23:52:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 23:52:46,045 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 2 states have call successors, (3), 3 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 57 [2021-05-02 23:52:46,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:46,045 INFO L225 Difference]: With dead ends: 68 [2021-05-02 23:52:46,046 INFO L226 Difference]: Without dead ends: 61 [2021-05-02 23:52:46,046 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 6 SyntacticMatches, 25 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1359.4ms TimeCoverageRelationStatistics Valid=201, Invalid=2555, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 23:52:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-02 23:52:46,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-05-02 23:52:46,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-05-02 23:52:46,051 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 57 [2021-05-02 23:52:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:46,051 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-05-02 23:52:46,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-05-02 23:52:46,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 23:52:46,052 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:46,052 INFO L523 BasicCegarLoop]: trace histogram [24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:46,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-02 23:52:46,052 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:46,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:46,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1118196826, now seen corresponding path program 24 times [2021-05-02 23:52:46,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:46,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557676045] [2021-05-02 23:52:46,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:46,056 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_400 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_400} OutVars{main_~x~0=v_main_~x~0_400} AuxVars[] AssignedVars[] [2021-05-02 23:52:46,061 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:46,062 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:46,076 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:46,095 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:46,119 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:46,120 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_402 4294967296) 10000000) (< (mod (+ v_main_~x~0_402 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_402} OutVars{main_~x~0=v_main_~x~0_402} AuxVars[] AssignedVars[] [2021-05-02 23:52:46,129 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:46,130 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:46,132 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:46,732 WARN L205 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:52:46,791 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:46,795 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:46,829 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:46,849 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:46,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:47,582 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:47,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557676045] [2021-05-02 23:52:47,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1557676045] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:47,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:47,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-02 23:52:47,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713725992] [2021-05-02 23:52:47,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 23:52:47,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:47,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 23:52:47,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2021-05-02 23:52:47,584 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:48,831 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2021-05-02 23:52:48,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 23:52:48,832 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 2 states have call successors, (3), 3 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 59 [2021-05-02 23:52:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:48,832 INFO L225 Difference]: With dead ends: 70 [2021-05-02 23:52:48,832 INFO L226 Difference]: Without dead ends: 63 [2021-05-02 23:52:48,833 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 6 SyntacticMatches, 26 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 1365.2ms TimeCoverageRelationStatistics Valid=209, Invalid=2761, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 23:52:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-02 23:52:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-05-02 23:52:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:48,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-05-02 23:52:48,838 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2021-05-02 23:52:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:48,838 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-05-02 23:52:48,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 1.9642857142857142) internal successors, (55), 27 states have internal predecessors, (55), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-05-02 23:52:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 23:52:48,838 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:48,838 INFO L523 BasicCegarLoop]: trace histogram [25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:48,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-02 23:52:48,839 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:48,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:48,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1920657911, now seen corresponding path program 25 times [2021-05-02 23:52:48,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:48,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723438943] [2021-05-02 23:52:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:48,844 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_429 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_429} OutVars{main_~x~0=v_main_~x~0_429} AuxVars[] AssignedVars[] [2021-05-02 23:52:48,845 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:48,846 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:48,867 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:48,886 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:48,904 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:48,905 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_431 4294967296) 10000000) (< (mod (+ v_main_~x~0_431 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_431} OutVars{main_~x~0=v_main_~x~0_431} AuxVars[] AssignedVars[] [2021-05-02 23:52:48,907 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:48,907 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:48,909 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:48,959 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:48,966 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:49,024 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:49,041 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:49,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:49,822 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:49,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723438943] [2021-05-02 23:52:49,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [723438943] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:49,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:49,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-02 23:52:49,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663012987] [2021-05-02 23:52:49,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 23:52:49,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:49,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 23:52:49,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2021-05-02 23:52:49,824 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:51,144 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2021-05-02 23:52:51,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 23:52:51,144 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (3), 3 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 61 [2021-05-02 23:52:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:51,145 INFO L225 Difference]: With dead ends: 72 [2021-05-02 23:52:51,145 INFO L226 Difference]: Without dead ends: 65 [2021-05-02 23:52:51,146 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 6 SyntacticMatches, 27 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1426.6ms TimeCoverageRelationStatistics Valid=217, Invalid=2975, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 23:52:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-02 23:52:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-02 23:52:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-05-02 23:52:51,150 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2021-05-02 23:52:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:51,150 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-05-02 23:52:51,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-05-02 23:52:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 23:52:51,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:51,151 INFO L523 BasicCegarLoop]: trace histogram [26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:51,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-02 23:52:51,151 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:51,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:51,151 INFO L82 PathProgramCache]: Analyzing trace with hash -8352684, now seen corresponding path program 26 times [2021-05-02 23:52:51,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:51,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827960783] [2021-05-02 23:52:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:51,160 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_459 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_459} OutVars{main_~x~0=v_main_~x~0_459} AuxVars[] AssignedVars[] [2021-05-02 23:52:51,161 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:51,161 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:51,175 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:51,197 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:51,214 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:51,215 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_461 4294967296) 10000000) (< (mod (+ v_main_~x~0_461 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_461} OutVars{main_~x~0=v_main_~x~0_461} AuxVars[] AssignedVars[] [2021-05-02 23:52:51,216 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:51,217 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:51,218 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:51,265 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:51,274 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:51,326 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:51,344 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:52,144 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:52,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827960783] [2021-05-02 23:52:52,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1827960783] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:52,144 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:52,144 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-02 23:52:52,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705166259] [2021-05-02 23:52:52,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 23:52:52,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:52,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 23:52:52,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2021-05-02 23:52:52,146 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:53,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:53,533 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-05-02 23:52:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 23:52:53,533 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 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 63 [2021-05-02 23:52:53,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:53,534 INFO L225 Difference]: With dead ends: 74 [2021-05-02 23:52:53,534 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 23:52:53,535 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 6 SyntacticMatches, 28 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1496.6ms TimeCoverageRelationStatistics Valid=225, Invalid=3197, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 23:52:53,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 23:52:53,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-05-02 23:52:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2021-05-02 23:52:53,539 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2021-05-02 23:52:53,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:53,539 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2021-05-02 23:52:53,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 1.9666666666666666) internal successors, (59), 29 states have internal predecessors, (59), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:53,540 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2021-05-02 23:52:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 23:52:53,541 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:53,541 INFO L523 BasicCegarLoop]: trace histogram [27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:53,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-02 23:52:53,541 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:53,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1638337393, now seen corresponding path program 27 times [2021-05-02 23:52:53,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:53,541 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841214423] [2021-05-02 23:52:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:53,546 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_490 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_490} OutVars{main_~x~0=v_main_~x~0_490} AuxVars[] AssignedVars[] [2021-05-02 23:52:53,547 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:53,548 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:53,559 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:53,576 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:53,596 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:53,609 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_492 4294967296) 10000000) (< (mod (+ v_main_~x~0_492 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_492} OutVars{main_~x~0=v_main_~x~0_492} AuxVars[] AssignedVars[] [2021-05-02 23:52:53,611 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:53,612 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:53,616 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:54,251 WARN L205 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:52:54,266 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:54,275 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:54,322 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:54,345 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:55,196 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:55,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841214423] [2021-05-02 23:52:55,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [841214423] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:55,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:55,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-02 23:52:55,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117422486] [2021-05-02 23:52:55,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 23:52:55,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:55,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 23:52:55,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 23:52:55,197 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:56,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:56,665 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2021-05-02 23:52:56,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 23:52:56,665 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 2 states have call successors, (3), 3 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 65 [2021-05-02 23:52:56,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:56,666 INFO L225 Difference]: With dead ends: 76 [2021-05-02 23:52:56,666 INFO L226 Difference]: Without dead ends: 69 [2021-05-02 23:52:56,667 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 7 SyntacticMatches, 28 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 1594.6ms TimeCoverageRelationStatistics Valid=233, Invalid=3427, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 23:52:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-02 23:52:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-05-02 23:52:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-05-02 23:52:56,671 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 65 [2021-05-02 23:52:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:56,671 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-05-02 23:52:56,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:56,671 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-05-02 23:52:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 23:52:56,671 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:56,672 INFO L523 BasicCegarLoop]: trace histogram [28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:56,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-02 23:52:56,672 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:56,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:56,672 INFO L82 PathProgramCache]: Analyzing trace with hash -735430834, now seen corresponding path program 28 times [2021-05-02 23:52:56,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:56,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496517855] [2021-05-02 23:52:56,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:56,676 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_522 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_522} OutVars{main_~x~0=v_main_~x~0_522} AuxVars[] AssignedVars[] [2021-05-02 23:52:56,678 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:56,685 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:56,707 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:56,718 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:56,757 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:56,758 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_524 4294967296) 10000000) (< (mod (+ v_main_~x~0_524 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_524} OutVars{main_~x~0=v_main_~x~0_524} AuxVars[] AssignedVars[] [2021-05-02 23:52:56,759 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:56,771 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:56,774 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:57,018 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:52:57,044 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:52:57,048 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:52:57,067 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:52:57,083 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:57,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:52:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:52:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:52:57,991 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:52:57,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496517855] [2021-05-02 23:52:57,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [496517855] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:52:57,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:52:57,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-02 23:52:57,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305831037] [2021-05-02 23:52:57,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 23:52:57,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:52:57,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 23:52:57,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 23:52:57,993 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:52:59,512 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2021-05-02 23:52:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 23:52:59,512 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 2 states have call successors, (3), 3 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 67 [2021-05-02 23:52:59,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:52:59,513 INFO L225 Difference]: With dead ends: 78 [2021-05-02 23:52:59,513 INFO L226 Difference]: Without dead ends: 71 [2021-05-02 23:52:59,514 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 6 SyntacticMatches, 30 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1661.3ms TimeCoverageRelationStatistics Valid=241, Invalid=3665, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 23:52:59,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-02 23:52:59,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-05-02 23:52:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-05-02 23:52:59,519 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2021-05-02 23:52:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:52:59,519 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-05-02 23:52:59,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 1.96875) internal successors, (63), 31 states have internal predecessors, (63), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:52:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-05-02 23:52:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 23:52:59,519 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:52:59,519 INFO L523 BasicCegarLoop]: trace histogram [29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:52:59,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-02 23:52:59,520 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:52:59,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:52:59,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1299062805, now seen corresponding path program 29 times [2021-05-02 23:52:59,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:52:59,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63171769] [2021-05-02 23:52:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:52:59,529 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_555 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_555} OutVars{main_~x~0=v_main_~x~0_555} AuxVars[] AssignedVars[] [2021-05-02 23:52:59,533 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:52:59,534 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:59,556 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:52:59,577 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:52:59,599 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:52:59,600 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_557 4294967296) 10000000) (< (mod (+ v_main_~x~0_557 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_557} OutVars{main_~x~0=v_main_~x~0_557} AuxVars[] AssignedVars[] [2021-05-02 23:52:59,605 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:52:59,618 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:52:59,620 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:00,132 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:53:00,151 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:00,155 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:00,182 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:00,201 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:00,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:01,137 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:01,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63171769] [2021-05-02 23:53:01,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [63171769] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:01,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:01,137 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-02 23:53:01,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81433836] [2021-05-02 23:53:01,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 23:53:01,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:01,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 23:53:01,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 23:53:01,138 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:02,780 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2021-05-02 23:53:02,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 23:53:02,780 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (3), 3 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 69 [2021-05-02 23:53:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:02,781 INFO L225 Difference]: With dead ends: 80 [2021-05-02 23:53:02,781 INFO L226 Difference]: Without dead ends: 73 [2021-05-02 23:53:02,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 6 SyntacticMatches, 31 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 1756.9ms TimeCoverageRelationStatistics Valid=249, Invalid=3911, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 23:53:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-02 23:53:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-05-02 23:53:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-05-02 23:53:02,787 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 69 [2021-05-02 23:53:02,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:02,787 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-05-02 23:53:02,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 32 states have internal predecessors, (65), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:02,787 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-05-02 23:53:02,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 23:53:02,787 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:02,788 INFO L523 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:02,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-02 23:53:02,788 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:02,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:02,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1783507640, now seen corresponding path program 30 times [2021-05-02 23:53:02,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:02,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795199299] [2021-05-02 23:53:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:02,799 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_589 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_589} OutVars{main_~x~0=v_main_~x~0_589} AuxVars[] AssignedVars[] [2021-05-02 23:53:02,800 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:02,800 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:02,822 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:02,840 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:02,858 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:02,859 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_591 4294967296) 10000000) (< (mod (+ v_main_~x~0_591 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_591} OutVars{main_~x~0=v_main_~x~0_591} AuxVars[] AssignedVars[] [2021-05-02 23:53:02,871 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:02,882 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:02,884 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:02,921 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:02,925 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:02,954 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:02,973 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:03,969 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:03,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795199299] [2021-05-02 23:53:03,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1795199299] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:03,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:03,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-02 23:53:03,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247803239] [2021-05-02 23:53:03,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 23:53:03,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:03,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 23:53:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1158, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 23:53:03,971 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:05,686 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2021-05-02 23:53:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 23:53:05,686 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (3), 3 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 71 [2021-05-02 23:53:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:05,687 INFO L225 Difference]: With dead ends: 82 [2021-05-02 23:53:05,687 INFO L226 Difference]: Without dead ends: 75 [2021-05-02 23:53:05,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 6 SyntacticMatches, 32 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1856.2ms TimeCoverageRelationStatistics Valid=257, Invalid=4165, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 23:53:05,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-02 23:53:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-05-02 23:53:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-05-02 23:53:05,692 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2021-05-02 23:53:05,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:05,692 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-05-02 23:53:05,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 33 states have internal predecessors, (67), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-05-02 23:53:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 23:53:05,693 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:05,693 INFO L523 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:05,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-02 23:53:05,693 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:05,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:05,693 INFO L82 PathProgramCache]: Analyzing trace with hash 816441189, now seen corresponding path program 31 times [2021-05-02 23:53:05,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:05,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300401864] [2021-05-02 23:53:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:05,698 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_624 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_624} OutVars{main_~x~0=v_main_~x~0_624} AuxVars[] AssignedVars[] [2021-05-02 23:53:05,699 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:05,706 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:05,725 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:05,737 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:05,753 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:05,754 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_626 1) 4294967296) 100000000) (< (mod v_main_~x~0_626 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_626} OutVars{main_~x~0=v_main_~x~0_626} AuxVars[] AssignedVars[] [2021-05-02 23:53:05,755 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:05,767 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:05,769 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:05,968 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:53:05,988 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:05,992 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:06,014 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:06,033 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:06,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:07,103 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:07,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300401864] [2021-05-02 23:53:07,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1300401864] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:07,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:07,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-02 23:53:07,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579992184] [2021-05-02 23:53:07,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 23:53:07,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:07,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 23:53:07,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 23:53:07,104 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:08,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:08,927 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2021-05-02 23:53:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 23:53:08,928 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 2 states have call successors, (3), 3 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 73 [2021-05-02 23:53:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:08,928 INFO L225 Difference]: With dead ends: 84 [2021-05-02 23:53:08,929 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 23:53:08,929 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 6 SyntacticMatches, 33 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1975.0ms TimeCoverageRelationStatistics Valid=265, Invalid=4427, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 23:53:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 23:53:08,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-05-02 23:53:08,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:08,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-05-02 23:53:08,934 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 73 [2021-05-02 23:53:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:08,934 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-05-02 23:53:08,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 1.9714285714285715) internal successors, (69), 34 states have internal predecessors, (69), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-05-02 23:53:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 23:53:08,934 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:08,935 INFO L523 BasicCegarLoop]: trace histogram [32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:08,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-02 23:53:08,935 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash -303700414, now seen corresponding path program 32 times [2021-05-02 23:53:08,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:08,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739494715] [2021-05-02 23:53:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:08,939 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_660 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_660} OutVars{main_~x~0=v_main_~x~0_660} AuxVars[] AssignedVars[] [2021-05-02 23:53:08,940 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:08,947 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:08,960 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:08,976 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:08,999 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:09,000 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_662 1) 4294967296) 100000000) (< (mod v_main_~x~0_662 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_662} OutVars{main_~x~0=v_main_~x~0_662} AuxVars[] AssignedVars[] [2021-05-02 23:53:09,002 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:09,016 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:09,018 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:09,132 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:53:09,159 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:09,271 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-05-02 23:53:09,272 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:09,291 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:09,309 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:09,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:09,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:10,480 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:10,481 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739494715] [2021-05-02 23:53:10,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1739494715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:10,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:10,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-02 23:53:10,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351024490] [2021-05-02 23:53:10,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 23:53:10,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:10,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 23:53:10,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1298, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 23:53:10,482 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:12,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:12,391 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2021-05-02 23:53:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 23:53:12,392 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 states have internal predecessors, (71), 2 states have call successors, (3), 3 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 75 [2021-05-02 23:53:12,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:12,392 INFO L225 Difference]: With dead ends: 86 [2021-05-02 23:53:12,392 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 23:53:12,393 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 7 SyntacticMatches, 33 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 2123.4ms TimeCoverageRelationStatistics Valid=273, Invalid=4697, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 23:53:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 23:53:12,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-05-02 23:53:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-05-02 23:53:12,398 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2021-05-02 23:53:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:12,398 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-05-02 23:53:12,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 1.9722222222222223) internal successors, (71), 35 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-05-02 23:53:12,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 23:53:12,398 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:12,398 INFO L523 BasicCegarLoop]: trace histogram [33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:12,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-02 23:53:12,399 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:12,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1277010399, now seen corresponding path program 33 times [2021-05-02 23:53:12,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:12,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557996603] [2021-05-02 23:53:12,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:12,408 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_697 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_697} OutVars{main_~x~0=v_main_~x~0_697} AuxVars[] AssignedVars[] [2021-05-02 23:53:12,409 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:12,416 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:12,427 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:12,439 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:12,458 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:12,460 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_699 1) 4294967296) 100000000) (< (mod v_main_~x~0_699 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_699} OutVars{main_~x~0=v_main_~x~0_699} AuxVars[] AssignedVars[] [2021-05-02 23:53:12,461 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:12,462 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:12,464 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:13,413 WARN L205 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:53:13,447 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:13,453 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:13,483 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:13,501 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:13,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:14,715 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:14,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557996603] [2021-05-02 23:53:14,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [557996603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:14,715 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:14,715 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-02 23:53:14,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525657369] [2021-05-02 23:53:14,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 23:53:14,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:14,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 23:53:14,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1371, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 23:53:14,717 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 36 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:16,711 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-05-02 23:53:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 23:53:16,711 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 36 states have internal predecessors, (73), 2 states have call successors, (3), 3 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 77 [2021-05-02 23:53:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:16,712 INFO L225 Difference]: With dead ends: 88 [2021-05-02 23:53:16,712 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 23:53:16,713 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 7 SyntacticMatches, 34 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 2195.3ms TimeCoverageRelationStatistics Valid=281, Invalid=4975, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 23:53:16,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 23:53:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-05-02 23:53:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-05-02 23:53:16,723 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2021-05-02 23:53:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:16,723 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-05-02 23:53:16,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 36 states have internal predecessors, (73), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-05-02 23:53:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 23:53:16,724 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:16,724 INFO L523 BasicCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:16,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-02 23:53:16,724 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:16,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:16,724 INFO L82 PathProgramCache]: Analyzing trace with hash -78321092, now seen corresponding path program 34 times [2021-05-02 23:53:16,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:16,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631693351] [2021-05-02 23:53:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:16,729 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_735 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_735} OutVars{main_~x~0=v_main_~x~0_735} AuxVars[] AssignedVars[] [2021-05-02 23:53:16,730 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:16,731 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:16,746 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:16,763 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:16,782 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:16,784 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_737 1) 4294967296) 100000000) (< (mod v_main_~x~0_737 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_737} OutVars{main_~x~0=v_main_~x~0_737} AuxVars[] AssignedVars[] [2021-05-02 23:53:16,785 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:16,786 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:16,787 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:16,828 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:16,832 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:16,868 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:16,888 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:18,112 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:18,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631693351] [2021-05-02 23:53:18,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [631693351] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:18,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:18,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-02 23:53:18,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583881588] [2021-05-02 23:53:18,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 23:53:18,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:18,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 23:53:18,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1446, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 23:53:18,114 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 38 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 37 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:20,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:20,247 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-05-02 23:53:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 23:53:20,248 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 37 states have internal predecessors, (75), 2 states have call successors, (3), 3 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 79 [2021-05-02 23:53:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:20,248 INFO L225 Difference]: With dead ends: 90 [2021-05-02 23:53:20,248 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 23:53:20,249 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 7 SyntacticMatches, 35 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 2279.7ms TimeCoverageRelationStatistics Valid=289, Invalid=5261, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 23:53:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 23:53:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 23:53:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-05-02 23:53:20,254 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2021-05-02 23:53:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:20,254 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-05-02 23:53:20,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 1.9736842105263157) internal successors, (75), 37 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-05-02 23:53:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 23:53:20,255 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:20,255 INFO L523 BasicCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:20,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-02 23:53:20,255 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:20,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1176793255, now seen corresponding path program 35 times [2021-05-02 23:53:20,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:20,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367980388] [2021-05-02 23:53:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:20,260 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_774 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_774} OutVars{main_~x~0=v_main_~x~0_774} AuxVars[] AssignedVars[] [2021-05-02 23:53:20,261 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:20,269 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:20,281 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:20,292 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:20,313 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:20,314 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_776 1) 4294967296) 100000000) (< (mod v_main_~x~0_776 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_776} OutVars{main_~x~0=v_main_~x~0_776} AuxVars[] AssignedVars[] [2021-05-02 23:53:20,315 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:20,316 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:20,317 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:20,365 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:20,369 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:20,427 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:20,450 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:21,793 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:21,794 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367980388] [2021-05-02 23:53:21,794 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [367980388] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:21,794 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:21,794 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-02 23:53:21,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58268243] [2021-05-02 23:53:21,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 23:53:21,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:21,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 23:53:21,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 23:53:21,795 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 39 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:24,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:24,005 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-05-02 23:53:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 23:53:24,005 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (3), 3 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 81 [2021-05-02 23:53:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:24,006 INFO L225 Difference]: With dead ends: 92 [2021-05-02 23:53:24,006 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 23:53:24,007 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 7 SyntacticMatches, 36 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 2415.5ms TimeCoverageRelationStatistics Valid=297, Invalid=5555, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 23:53:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 23:53:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-05-02 23:53:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2021-05-02 23:53:24,012 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 81 [2021-05-02 23:53:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:24,012 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2021-05-02 23:53:24,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 38 states have internal predecessors, (77), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2021-05-02 23:53:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 23:53:24,012 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:24,012 INFO L523 BasicCegarLoop]: trace histogram [36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:24,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-02 23:53:24,013 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash -246587082, now seen corresponding path program 36 times [2021-05-02 23:53:24,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:24,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888408256] [2021-05-02 23:53:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:24,017 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_814 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_814} OutVars{main_~x~0=v_main_~x~0_814} AuxVars[] AssignedVars[] [2021-05-02 23:53:24,019 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:24,019 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:24,033 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:24,048 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:24,065 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:24,066 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_816 1) 4294967296) 100000000) (< (mod v_main_~x~0_816 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_816} OutVars{main_~x~0=v_main_~x~0_816} AuxVars[] AssignedVars[] [2021-05-02 23:53:24,068 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:24,068 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:24,070 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:24,200 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:24,211 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:24,252 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:24,276 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:25,650 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:25,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888408256] [2021-05-02 23:53:25,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1888408256] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:25,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:25,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-02 23:53:25,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137841352] [2021-05-02 23:53:25,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 23:53:25,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:25,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 23:53:25,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1602, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 23:53:25,652 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:27,976 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2021-05-02 23:53:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 23:53:27,977 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 states have internal predecessors, (79), 2 states have call successors, (3), 3 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 83 [2021-05-02 23:53:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:27,978 INFO L225 Difference]: With dead ends: 94 [2021-05-02 23:53:27,978 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 23:53:27,978 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 6 SyntacticMatches, 38 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 2518.6ms TimeCoverageRelationStatistics Valid=305, Invalid=5857, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 23:53:27,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 23:53:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-05-02 23:53:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2021-05-02 23:53:27,984 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2021-05-02 23:53:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:27,984 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2021-05-02 23:53:27,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 1.975) internal successors, (79), 39 states have internal predecessors, (79), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2021-05-02 23:53:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 23:53:27,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:27,984 INFO L523 BasicCegarLoop]: trace histogram [37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:27,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-02 23:53:27,985 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:27,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:27,985 INFO L82 PathProgramCache]: Analyzing trace with hash 328347603, now seen corresponding path program 37 times [2021-05-02 23:53:27,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:27,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137232868] [2021-05-02 23:53:27,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:27,991 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_855 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_855} OutVars{main_~x~0=v_main_~x~0_855} AuxVars[] AssignedVars[] [2021-05-02 23:53:27,992 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:27,992 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:28,014 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:28,032 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:28,059 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:28,060 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_857 4294967296) 10000000) (< (mod (+ v_main_~x~0_857 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_857} OutVars{main_~x~0=v_main_~x~0_857} AuxVars[] AssignedVars[] [2021-05-02 23:53:28,062 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:28,062 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:28,064 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:28,129 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:28,134 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:28,176 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:28,192 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:29,627 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:29,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137232868] [2021-05-02 23:53:29,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1137232868] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:29,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:29,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-02 23:53:29,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62672364] [2021-05-02 23:53:29,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 23:53:29,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:29,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 23:53:29,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1683, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 23:53:29,629 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 40 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:32,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:32,108 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2021-05-02 23:53:32,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 23:53:32,109 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 40 states have internal predecessors, (81), 2 states have call successors, (3), 3 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 85 [2021-05-02 23:53:32,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:32,109 INFO L225 Difference]: With dead ends: 96 [2021-05-02 23:53:32,109 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 23:53:32,110 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 6 SyntacticMatches, 39 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 2641.0ms TimeCoverageRelationStatistics Valid=313, Invalid=6167, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 23:53:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 23:53:32,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-05-02 23:53:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:32,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-05-02 23:53:32,115 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2021-05-02 23:53:32,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:32,116 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-05-02 23:53:32,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 40 states have internal predecessors, (81), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:32,116 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-05-02 23:53:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 23:53:32,116 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:32,116 INFO L523 BasicCegarLoop]: trace histogram [38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:32,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-02 23:53:32,116 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:32,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:32,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1210201296, now seen corresponding path program 38 times [2021-05-02 23:53:32,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:32,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874994095] [2021-05-02 23:53:32,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:32,121 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_897 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_897} OutVars{main_~x~0=v_main_~x~0_897} AuxVars[] AssignedVars[] [2021-05-02 23:53:32,123 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:32,130 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:32,143 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:32,158 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:32,178 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:32,180 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_899 1) 4294967296) 100000000) (< (mod v_main_~x~0_899 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_899} OutVars{main_~x~0=v_main_~x~0_899} AuxVars[] AssignedVars[] [2021-05-02 23:53:32,181 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:32,193 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:32,194 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:34,341 WARN L205 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:53:34,385 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:34,391 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:34,418 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:34,436 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:34,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:35,989 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:35,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874994095] [2021-05-02 23:53:35,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1874994095] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:35,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:35,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-02 23:53:35,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935975530] [2021-05-02 23:53:35,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 23:53:35,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:35,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 23:53:35,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1766, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 23:53:35,991 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 42 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 41 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:38,581 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-05-02 23:53:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 23:53:38,581 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 41 states have internal predecessors, (83), 2 states have call successors, (3), 3 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 87 [2021-05-02 23:53:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:38,582 INFO L225 Difference]: With dead ends: 98 [2021-05-02 23:53:38,582 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 23:53:38,583 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 6 SyntacticMatches, 40 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 2823.6ms TimeCoverageRelationStatistics Valid=321, Invalid=6485, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 23:53:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 23:53:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-05-02 23:53:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-05-02 23:53:38,589 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2021-05-02 23:53:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:38,589 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-05-02 23:53:38,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 41 states have internal predecessors, (83), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-05-02 23:53:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 23:53:38,590 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:38,590 INFO L523 BasicCegarLoop]: trace histogram [39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:38,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-02 23:53:38,590 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:38,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2008023885, now seen corresponding path program 39 times [2021-05-02 23:53:38,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:38,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566677494] [2021-05-02 23:53:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:38,595 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_940 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_940} OutVars{main_~x~0=v_main_~x~0_940} AuxVars[] AssignedVars[] [2021-05-02 23:53:38,596 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:38,604 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:38,620 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:38,631 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:38,649 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:38,651 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_942 4294967296) 10000000) (< (mod (+ v_main_~x~0_942 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_942} OutVars{main_~x~0=v_main_~x~0_942} AuxVars[] AssignedVars[] [2021-05-02 23:53:38,652 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:38,653 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:38,654 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:39,341 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:53:39,365 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:39,369 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:39,402 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:39,420 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:39,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:41,003 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:41,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566677494] [2021-05-02 23:53:41,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1566677494] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:41,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:41,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-02 23:53:41,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894086789] [2021-05-02 23:53:41,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 23:53:41,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:41,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 23:53:41,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1851, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 23:53:41,005 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 42 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:43,667 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2021-05-02 23:53:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 23:53:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 42 states have internal predecessors, (85), 2 states have call successors, (3), 3 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 89 [2021-05-02 23:53:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:43,668 INFO L225 Difference]: With dead ends: 100 [2021-05-02 23:53:43,668 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 23:53:43,669 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 7 SyntacticMatches, 40 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 2864.6ms TimeCoverageRelationStatistics Valid=329, Invalid=6811, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 23:53:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 23:53:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-05-02 23:53:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-05-02 23:53:43,674 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 89 [2021-05-02 23:53:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:43,674 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-05-02 23:53:43,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 1.9767441860465116) internal successors, (85), 42 states have internal predecessors, (85), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-05-02 23:53:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 23:53:43,675 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:43,675 INFO L523 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:43,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-05-02 23:53:43,675 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1948997590, now seen corresponding path program 40 times [2021-05-02 23:53:43,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:43,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091797210] [2021-05-02 23:53:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:43,680 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_984 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_984} OutVars{main_~x~0=v_main_~x~0_984} AuxVars[] AssignedVars[] [2021-05-02 23:53:43,681 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:43,688 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:43,705 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:43,717 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:43,734 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:43,735 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_986 4294967296) 10000000) (< (mod (+ v_main_~x~0_986 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_986} OutVars{main_~x~0=v_main_~x~0_986} AuxVars[] AssignedVars[] [2021-05-02 23:53:43,737 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:43,737 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:43,739 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:43,789 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:43,796 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:43,831 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:43,850 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:43,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:45,534 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:45,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091797210] [2021-05-02 23:53:45,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1091797210] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:45,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:45,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-02 23:53:45,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744037009] [2021-05-02 23:53:45,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 23:53:45,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:45,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 23:53:45,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1938, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 23:53:45,535 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:48,365 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2021-05-02 23:53:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 23:53:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 states have internal predecessors, (87), 2 states have call successors, (3), 3 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 91 [2021-05-02 23:53:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:48,367 INFO L225 Difference]: With dead ends: 102 [2021-05-02 23:53:48,367 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 23:53:48,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 7 SyntacticMatches, 41 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 979 ImplicationChecksByTransitivity, 3050.2ms TimeCoverageRelationStatistics Valid=337, Invalid=7145, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 23:53:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 23:53:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-05-02 23:53:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-05-02 23:53:48,373 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2021-05-02 23:53:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:48,373 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-05-02 23:53:48,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 1.9772727272727273) internal successors, (87), 43 states have internal predecessors, (87), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-05-02 23:53:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 23:53:48,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:48,374 INFO L523 BasicCegarLoop]: trace histogram [41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:48,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-05-02 23:53:48,374 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash 694389191, now seen corresponding path program 41 times [2021-05-02 23:53:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:48,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496259385] [2021-05-02 23:53:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:48,380 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1029 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1029} OutVars{main_~x~0=v_main_~x~0_1029} AuxVars[] AssignedVars[] [2021-05-02 23:53:48,381 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:48,389 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:48,402 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:48,412 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:48,436 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:48,438 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1031 1) 4294967296) 100000000) (< (mod v_main_~x~0_1031 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1031} OutVars{main_~x~0=v_main_~x~0_1031} AuxVars[] AssignedVars[] [2021-05-02 23:53:48,439 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:48,440 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:48,442 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:48,500 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:48,503 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:48,532 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:48,550 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:48,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:50,287 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:50,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496259385] [2021-05-02 23:53:50,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [496259385] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:50,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:50,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-02 23:53:50,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411367270] [2021-05-02 23:53:50,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 23:53:50,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:50,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 23:53:50,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 23:53:50,289 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 45 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 44 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:53,242 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2021-05-02 23:53:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 23:53:53,242 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 44 states have internal predecessors, (89), 2 states have call successors, (3), 3 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 93 [2021-05-02 23:53:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:53,243 INFO L225 Difference]: With dead ends: 104 [2021-05-02 23:53:53,243 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 23:53:53,244 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 6 SyntacticMatches, 43 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 3156.3ms TimeCoverageRelationStatistics Valid=345, Invalid=7487, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 23:53:53,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 23:53:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-05-02 23:53:53,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2021-05-02 23:53:53,250 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 93 [2021-05-02 23:53:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:53,250 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2021-05-02 23:53:53,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 1.9777777777777779) internal successors, (89), 44 states have internal predecessors, (89), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2021-05-02 23:53:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 23:53:53,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:53,251 INFO L523 BasicCegarLoop]: trace histogram [42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:53,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-05-02 23:53:53,251 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:53,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1631553500, now seen corresponding path program 42 times [2021-05-02 23:53:53,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:53,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984708327] [2021-05-02 23:53:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:53,256 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1075 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1075} OutVars{main_~x~0=v_main_~x~0_1075} AuxVars[] AssignedVars[] [2021-05-02 23:53:53,257 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:53,258 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:53,272 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:53,299 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:53,316 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:53,317 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1077 1) 4294967296) 100000000) (< (mod v_main_~x~0_1077 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1077} OutVars{main_~x~0=v_main_~x~0_1077} AuxVars[] AssignedVars[] [2021-05-02 23:53:53,319 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:53,319 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:53,337 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:53,385 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:53,391 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:53,430 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:53,449 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:53:55,313 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:53:55,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984708327] [2021-05-02 23:53:55,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1984708327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:53:55,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:53:55,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-02 23:53:55,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874985124] [2021-05-02 23:53:55,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 23:53:55,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:53:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 23:53:55,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=2118, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 23:53:55,315 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 45 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:53:58,368 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2021-05-02 23:53:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 23:53:58,368 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 45 states have internal predecessors, (91), 2 states have call successors, (3), 3 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 95 [2021-05-02 23:53:58,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:53:58,369 INFO L225 Difference]: With dead ends: 106 [2021-05-02 23:53:58,369 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 23:53:58,370 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 6 SyntacticMatches, 44 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 3321.6ms TimeCoverageRelationStatistics Valid=353, Invalid=7837, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 23:53:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 23:53:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-05-02 23:53:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:58,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-05-02 23:53:58,375 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2021-05-02 23:53:58,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:53:58,376 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-05-02 23:53:58,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 1.9782608695652173) internal successors, (91), 45 states have internal predecessors, (91), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:53:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-05-02 23:53:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 23:53:58,376 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:53:58,376 INFO L523 BasicCegarLoop]: trace histogram [43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:53:58,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-05-02 23:53:58,376 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:53:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:53:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash 815481665, now seen corresponding path program 43 times [2021-05-02 23:53:58,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:53:58,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089001520] [2021-05-02 23:53:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:53:58,381 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1122 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1122} OutVars{main_~x~0=v_main_~x~0_1122} AuxVars[] AssignedVars[] [2021-05-02 23:53:58,383 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:53:58,383 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:58,400 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:53:58,424 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:53:58,447 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:58,448 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1124 4294967296) 10000000) (< (mod (+ v_main_~x~0_1124 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1124} OutVars{main_~x~0=v_main_~x~0_1124} AuxVars[] AssignedVars[] [2021-05-02 23:53:58,449 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:53:58,460 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:58,462 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:53:59,676 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:53:59,703 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:53:59,706 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:53:59,739 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:53:59,758 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:53:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:59,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:53:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:53:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:01,710 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:01,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089001520] [2021-05-02 23:54:01,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2089001520] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:01,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:01,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-02 23:54:01,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312220101] [2021-05-02 23:54:01,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 23:54:01,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:01,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 23:54:01,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2211, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 23:54:01,712 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:04,958 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2021-05-02 23:54:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 23:54:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 states have internal predecessors, (93), 2 states have call successors, (3), 3 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 97 [2021-05-02 23:54:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:04,959 INFO L225 Difference]: With dead ends: 108 [2021-05-02 23:54:04,959 INFO L226 Difference]: Without dead ends: 101 [2021-05-02 23:54:04,960 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 7 SyntacticMatches, 44 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 3495.4ms TimeCoverageRelationStatistics Valid=361, Invalid=8195, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 23:54:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-02 23:54:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-02 23:54:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-05-02 23:54:04,966 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 97 [2021-05-02 23:54:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:04,966 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-05-02 23:54:04,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 states have internal predecessors, (93), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-05-02 23:54:04,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 23:54:04,966 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:04,966 INFO L523 BasicCegarLoop]: trace histogram [44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:04,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-05-02 23:54:04,967 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:04,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1225802978, now seen corresponding path program 44 times [2021-05-02 23:54:04,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:04,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002061151] [2021-05-02 23:54:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:04,977 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1170 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1170} OutVars{main_~x~0=v_main_~x~0_1170} AuxVars[] AssignedVars[] [2021-05-02 23:54:04,979 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:04,980 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:05,001 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:05,021 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:05,040 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:05,042 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1172 4294967296) 10000000) (< (mod (+ v_main_~x~0_1172 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1172} OutVars{main_~x~0=v_main_~x~0_1172} AuxVars[] AssignedVars[] [2021-05-02 23:54:05,043 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:05,044 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:05,045 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:05,085 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:05,088 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:05,133 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:05,154 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:05,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:07,140 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:07,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002061151] [2021-05-02 23:54:07,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2002061151] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:07,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:07,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-02 23:54:07,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587220174] [2021-05-02 23:54:07,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 23:54:07,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:07,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 23:54:07,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2306, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 23:54:07,142 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 48 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 47 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:10,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:10,579 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2021-05-02 23:54:10,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 23:54:10,580 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 47 states have internal predecessors, (95), 2 states have call successors, (3), 3 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 99 [2021-05-02 23:54:10,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:10,580 INFO L225 Difference]: With dead ends: 110 [2021-05-02 23:54:10,581 INFO L226 Difference]: Without dead ends: 103 [2021-05-02 23:54:10,581 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 7 SyntacticMatches, 45 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 3625.4ms TimeCoverageRelationStatistics Valid=369, Invalid=8561, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 23:54:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-05-02 23:54:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-05-02 23:54:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2021-05-02 23:54:10,587 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2021-05-02 23:54:10,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:10,587 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2021-05-02 23:54:10,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 1.9791666666666667) internal successors, (95), 47 states have internal predecessors, (95), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:10,587 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2021-05-02 23:54:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 23:54:10,588 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:10,588 INFO L523 BasicCegarLoop]: trace histogram [45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:10,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-05-02 23:54:10,588 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:10,588 INFO L82 PathProgramCache]: Analyzing trace with hash -100290629, now seen corresponding path program 45 times [2021-05-02 23:54:10,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:10,589 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415528585] [2021-05-02 23:54:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:10,600 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1219 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1219} OutVars{main_~x~0=v_main_~x~0_1219} AuxVars[] AssignedVars[] [2021-05-02 23:54:10,601 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:10,608 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:10,622 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:10,640 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:10,658 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:10,659 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1221 1) 4294967296) 100000000) (< (mod v_main_~x~0_1221 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1221} OutVars{main_~x~0=v_main_~x~0_1221} AuxVars[] AssignedVars[] [2021-05-02 23:54:10,660 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:10,672 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:10,674 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:10,963 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:54:10,982 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:10,985 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:11,011 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:11,030 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:13,057 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:13,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415528585] [2021-05-02 23:54:13,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1415528585] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:13,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:13,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-05-02 23:54:13,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891935406] [2021-05-02 23:54:13,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 23:54:13,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:13,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 23:54:13,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2403, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 23:54:13,058 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:16,509 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2021-05-02 23:54:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 23:54:16,510 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (3), 3 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 101 [2021-05-02 23:54:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:16,510 INFO L225 Difference]: With dead ends: 112 [2021-05-02 23:54:16,510 INFO L226 Difference]: Without dead ends: 105 [2021-05-02 23:54:16,511 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 7 SyntacticMatches, 46 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 3676.4ms TimeCoverageRelationStatistics Valid=377, Invalid=8935, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 23:54:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-05-02 23:54:16,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-05-02 23:54:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2021-05-02 23:54:16,517 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 101 [2021-05-02 23:54:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:16,517 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2021-05-02 23:54:16,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:16,517 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2021-05-02 23:54:16,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 23:54:16,518 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:16,518 INFO L523 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:16,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-05-02 23:54:16,518 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:16,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:16,518 INFO L82 PathProgramCache]: Analyzing trace with hash -814681832, now seen corresponding path program 46 times [2021-05-02 23:54:16,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:16,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174632141] [2021-05-02 23:54:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:16,532 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1269 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1269} OutVars{main_~x~0=v_main_~x~0_1269} AuxVars[] AssignedVars[] [2021-05-02 23:54:16,535 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:16,542 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:16,570 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:16,584 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:16,610 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:16,611 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1271 4294967296) 10000000) (< (mod (+ v_main_~x~0_1271 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1271} OutVars{main_~x~0=v_main_~x~0_1271} AuxVars[] AssignedVars[] [2021-05-02 23:54:16,613 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:16,614 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:16,615 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:17,071 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:54:17,100 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:17,104 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:17,143 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:17,164 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:17,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:19,510 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:19,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174632141] [2021-05-02 23:54:19,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [174632141] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:19,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:19,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-02 23:54:19,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049271629] [2021-05-02 23:54:19,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 23:54:19,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:19,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 23:54:19,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2502, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 23:54:19,512 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 50 states, 50 states have (on average 1.98) internal successors, (99), 49 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:23,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:23,254 INFO L93 Difference]: Finished difference Result 114 states and 118 transitions. [2021-05-02 23:54:23,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 23:54:23,255 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 49 states have internal predecessors, (99), 2 states have call successors, (3), 3 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 103 [2021-05-02 23:54:23,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:23,257 INFO L225 Difference]: With dead ends: 114 [2021-05-02 23:54:23,257 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 23:54:23,258 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 7 SyntacticMatches, 47 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1264 ImplicationChecksByTransitivity, 4093.1ms TimeCoverageRelationStatistics Valid=385, Invalid=9317, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 23:54:23,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 23:54:23,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-05-02 23:54:23,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:23,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2021-05-02 23:54:23,265 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2021-05-02 23:54:23,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:23,265 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2021-05-02 23:54:23,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.98) internal successors, (99), 49 states have internal predecessors, (99), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:23,265 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2021-05-02 23:54:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 23:54:23,266 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:23,266 INFO L523 BasicCegarLoop]: trace histogram [47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:23,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-05-02 23:54:23,266 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:23,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:23,266 INFO L82 PathProgramCache]: Analyzing trace with hash -149860555, now seen corresponding path program 47 times [2021-05-02 23:54:23,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:23,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798089325] [2021-05-02 23:54:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:23,271 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1320 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1320} OutVars{main_~x~0=v_main_~x~0_1320} AuxVars[] AssignedVars[] [2021-05-02 23:54:23,272 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:23,279 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:23,298 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:23,312 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:23,332 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:23,333 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1322 1) 4294967296) 100000000) (< (mod v_main_~x~0_1322 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1322} OutVars{main_~x~0=v_main_~x~0_1322} AuxVars[] AssignedVars[] [2021-05-02 23:54:23,339 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:23,350 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:23,352 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:23,880 WARN L205 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:54:23,900 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:23,905 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:23,933 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:23,953 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:26,226 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:26,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798089325] [2021-05-02 23:54:26,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [798089325] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:26,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:26,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-02 23:54:26,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030890728] [2021-05-02 23:54:26,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 23:54:26,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:26,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 23:54:26,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2603, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 23:54:26,228 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 50 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:30,035 INFO L93 Difference]: Finished difference Result 116 states and 120 transitions. [2021-05-02 23:54:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 23:54:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 50 states have internal predecessors, (101), 2 states have call successors, (3), 3 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 105 [2021-05-02 23:54:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:30,036 INFO L225 Difference]: With dead ends: 116 [2021-05-02 23:54:30,036 INFO L226 Difference]: Without dead ends: 109 [2021-05-02 23:54:30,037 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 7 SyntacticMatches, 48 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 4069.7ms TimeCoverageRelationStatistics Valid=393, Invalid=9707, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 23:54:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-05-02 23:54:30,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-05-02 23:54:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2021-05-02 23:54:30,043 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 105 [2021-05-02 23:54:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:30,043 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2021-05-02 23:54:30,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 1.9803921568627452) internal successors, (101), 50 states have internal predecessors, (101), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2021-05-02 23:54:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 23:54:30,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:30,044 INFO L523 BasicCegarLoop]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:30,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-05-02 23:54:30,044 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:30,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:30,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1206740462, now seen corresponding path program 48 times [2021-05-02 23:54:30,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:30,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004798171] [2021-05-02 23:54:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:30,049 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1372 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1372} OutVars{main_~x~0=v_main_~x~0_1372} AuxVars[] AssignedVars[] [2021-05-02 23:54:30,050 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:30,058 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:30,079 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:30,094 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:30,112 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:30,113 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1374 4294967296) 10000000) (< (mod (+ v_main_~x~0_1374 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1374} OutVars{main_~x~0=v_main_~x~0_1374} AuxVars[] AssignedVars[] [2021-05-02 23:54:30,114 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:30,115 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:30,116 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:31,867 WARN L205 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:54:31,883 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:31,893 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:31,929 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:31,953 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:31,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:34,475 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:34,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004798171] [2021-05-02 23:54:34,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1004798171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:34,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:34,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-02 23:54:34,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475480185] [2021-05-02 23:54:34,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 23:54:34,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:34,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 23:54:34,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 23:54:34,477 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:38,383 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2021-05-02 23:54:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 23:54:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 2 states have call successors, (3), 3 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 107 [2021-05-02 23:54:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:38,384 INFO L225 Difference]: With dead ends: 118 [2021-05-02 23:54:38,384 INFO L226 Difference]: Without dead ends: 111 [2021-05-02 23:54:38,385 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 6 SyntacticMatches, 50 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1367 ImplicationChecksByTransitivity, 4348.1ms TimeCoverageRelationStatistics Valid=401, Invalid=10105, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 23:54:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-05-02 23:54:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-05-02 23:54:38,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:38,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2021-05-02 23:54:38,391 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2021-05-02 23:54:38,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:38,391 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2021-05-02 23:54:38,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 1.9807692307692308) internal successors, (103), 51 states have internal predecessors, (103), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2021-05-02 23:54:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 23:54:38,392 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:38,392 INFO L523 BasicCegarLoop]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:38,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-05-02 23:54:38,392 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:38,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:38,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1038918063, now seen corresponding path program 49 times [2021-05-02 23:54:38,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:38,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836946023] [2021-05-02 23:54:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:38,397 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1425 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1425} OutVars{main_~x~0=v_main_~x~0_1425} AuxVars[] AssignedVars[] [2021-05-02 23:54:38,405 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:38,406 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:38,423 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:38,449 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:38,469 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:38,473 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1427 1) 4294967296) 100000000) (< (mod v_main_~x~0_1427 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1427} OutVars{main_~x~0=v_main_~x~0_1427} AuxVars[] AssignedVars[] [2021-05-02 23:54:38,475 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:38,476 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:38,477 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:38,530 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:38,534 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:38,566 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:38,586 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:38,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:41,035 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:41,035 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836946023] [2021-05-02 23:54:41,035 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1836946023] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:41,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:41,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-02 23:54:41,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462571819] [2021-05-02 23:54:41,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 23:54:41,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:41,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 23:54:41,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2811, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 23:54:41,037 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 53 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 52 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:45,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:45,111 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2021-05-02 23:54:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 23:54:45,112 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 52 states have internal predecessors, (105), 2 states have call successors, (3), 3 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 109 [2021-05-02 23:54:45,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:45,113 INFO L225 Difference]: With dead ends: 120 [2021-05-02 23:54:45,113 INFO L226 Difference]: Without dead ends: 113 [2021-05-02 23:54:45,114 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 6 SyntacticMatches, 51 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 4349.4ms TimeCoverageRelationStatistics Valid=409, Invalid=10511, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 23:54:45,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-05-02 23:54:45,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-05-02 23:54:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2021-05-02 23:54:45,120 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 109 [2021-05-02 23:54:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:45,120 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2021-05-02 23:54:45,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 52 states have internal predecessors, (105), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2021-05-02 23:54:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 23:54:45,121 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:45,121 INFO L523 BasicCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:45,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-05-02 23:54:45,121 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:45,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1251789300, now seen corresponding path program 50 times [2021-05-02 23:54:45,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:45,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931193176] [2021-05-02 23:54:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:45,127 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1479 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1479} OutVars{main_~x~0=v_main_~x~0_1479} AuxVars[] AssignedVars[] [2021-05-02 23:54:45,128 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:45,128 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:45,141 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:45,162 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:45,181 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:45,182 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1481 1) 4294967296) 100000000) (< (mod v_main_~x~0_1481 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1481} OutVars{main_~x~0=v_main_~x~0_1481} AuxVars[] AssignedVars[] [2021-05-02 23:54:45,184 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:45,184 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:45,186 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:45,216 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:45,223 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:45,259 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:45,280 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:45,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:47,824 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:47,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931193176] [2021-05-02 23:54:47,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [931193176] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:47,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:47,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-02 23:54:47,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781856734] [2021-05-02 23:54:47,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 23:54:47,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:47,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 23:54:47,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2918, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 23:54:47,826 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 54 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 53 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:52,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:54:52,126 INFO L93 Difference]: Finished difference Result 122 states and 126 transitions. [2021-05-02 23:54:52,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 23:54:52,127 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 53 states have internal predecessors, (107), 2 states have call successors, (3), 3 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 111 [2021-05-02 23:54:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:54:52,127 INFO L225 Difference]: With dead ends: 122 [2021-05-02 23:54:52,127 INFO L226 Difference]: Without dead ends: 115 [2021-05-02 23:54:52,128 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 6 SyntacticMatches, 52 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 4557.5ms TimeCoverageRelationStatistics Valid=417, Invalid=10925, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 23:54:52,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-05-02 23:54:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-05-02 23:54:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2021-05-02 23:54:52,135 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 111 [2021-05-02 23:54:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:54:52,135 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2021-05-02 23:54:52,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 1.9814814814814814) internal successors, (107), 53 states have internal predecessors, (107), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:54:52,135 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2021-05-02 23:54:52,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 23:54:52,135 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:54:52,135 INFO L523 BasicCegarLoop]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:54:52,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-05-02 23:54:52,136 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:54:52,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:54:52,136 INFO L82 PathProgramCache]: Analyzing trace with hash 696657705, now seen corresponding path program 51 times [2021-05-02 23:54:52,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:54:52,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713390288] [2021-05-02 23:54:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:54:52,141 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1534 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1534} OutVars{main_~x~0=v_main_~x~0_1534} AuxVars[] AssignedVars[] [2021-05-02 23:54:52,142 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:54:52,149 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:52,161 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:54:52,174 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:54:52,198 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:52,200 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1536 1) 4294967296) 100000000) (< (mod v_main_~x~0_1536 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1536} OutVars{main_~x~0=v_main_~x~0_1536} AuxVars[] AssignedVars[] [2021-05-02 23:54:52,201 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:54:52,201 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:52,203 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:54:54,441 WARN L205 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:54:54,467 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:54:54,472 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:54:54,504 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:54:54,523 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:54:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:54,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:54:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:54:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:54:57,149 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:54:57,149 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713390288] [2021-05-02 23:54:57,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1713390288] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:54:57,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:54:57,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2021-05-02 23:54:57,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828674911] [2021-05-02 23:54:57,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 23:54:57,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:54:57,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 23:54:57,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 23:54:57,150 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:55:01,595 INFO L93 Difference]: Finished difference Result 124 states and 128 transitions. [2021-05-02 23:55:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 23:55:01,596 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (3), 3 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 113 [2021-05-02 23:55:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:55:01,597 INFO L225 Difference]: With dead ends: 124 [2021-05-02 23:55:01,597 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 23:55:01,598 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 7 SyntacticMatches, 52 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 4707.4ms TimeCoverageRelationStatistics Valid=425, Invalid=11347, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 23:55:01,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 23:55:01,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-05-02 23:55:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:01,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2021-05-02 23:55:01,604 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 113 [2021-05-02 23:55:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:55:01,604 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2021-05-02 23:55:01,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 54 states have internal predecessors, (109), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2021-05-02 23:55:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 23:55:01,605 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:55:01,605 INFO L523 BasicCegarLoop]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:55:01,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-05-02 23:55:01,605 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:55:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:55:01,605 INFO L82 PathProgramCache]: Analyzing trace with hash 548488454, now seen corresponding path program 52 times [2021-05-02 23:55:01,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:55:01,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115054063] [2021-05-02 23:55:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:55:01,610 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1590 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1590} OutVars{main_~x~0=v_main_~x~0_1590} AuxVars[] AssignedVars[] [2021-05-02 23:55:01,611 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:55:01,612 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:01,630 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:55:01,651 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:55:01,673 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:01,674 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1592 1) 4294967296) 100000000) (< (mod v_main_~x~0_1592 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1592} OutVars{main_~x~0=v_main_~x~0_1592} AuxVars[] AssignedVars[] [2021-05-02 23:55:01,676 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:55:01,677 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:01,678 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:01,783 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-02 23:55:02,739 WARN L205 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:55:02,760 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:55:02,768 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:55:02,811 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:55:02,834 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:02,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:55:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:55:05,612 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:55:05,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115054063] [2021-05-02 23:55:05,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1115054063] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:55:05,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:55:05,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-02 23:55:05,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721546065] [2021-05-02 23:55:05,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 23:55:05,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:55:05,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 23:55:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3138, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 23:55:05,614 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:10,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:55:10,313 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2021-05-02 23:55:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 23:55:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (3), 3 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 115 [2021-05-02 23:55:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:55:10,314 INFO L225 Difference]: With dead ends: 126 [2021-05-02 23:55:10,314 INFO L226 Difference]: Without dead ends: 119 [2021-05-02 23:55:10,315 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 6 SyntacticMatches, 54 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1585 ImplicationChecksByTransitivity, 4955.9ms TimeCoverageRelationStatistics Valid=433, Invalid=11777, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 23:55:10,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-05-02 23:55:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-05-02 23:55:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2021-05-02 23:55:10,322 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2021-05-02 23:55:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:55:10,322 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2021-05-02 23:55:10,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 1.9821428571428572) internal successors, (111), 55 states have internal predecessors, (111), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2021-05-02 23:55:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 23:55:10,322 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:55:10,322 INFO L523 BasicCegarLoop]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:55:10,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-05-02 23:55:10,323 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:55:10,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:55:10,323 INFO L82 PathProgramCache]: Analyzing trace with hash -108240989, now seen corresponding path program 53 times [2021-05-02 23:55:10,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:55:10,323 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282442021] [2021-05-02 23:55:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:55:10,328 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1647 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1647} OutVars{main_~x~0=v_main_~x~0_1647} AuxVars[] AssignedVars[] [2021-05-02 23:55:10,329 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:55:10,330 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:10,349 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:55:10,371 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:55:10,393 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:10,395 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1649 4294967296) 10000000) (< (mod (+ v_main_~x~0_1649 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1649} OutVars{main_~x~0=v_main_~x~0_1649} AuxVars[] AssignedVars[] [2021-05-02 23:55:10,396 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:55:10,410 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:10,413 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:12,022 WARN L205 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:55:12,044 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:55:12,049 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:55:12,078 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:55:12,097 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:55:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:55:14,999 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:55:14,999 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282442021] [2021-05-02 23:55:14,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [282442021] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:55:15,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:55:15,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2021-05-02 23:55:15,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744388163] [2021-05-02 23:55:15,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 23:55:15,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:55:15,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 23:55:15,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3251, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 23:55:15,001 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 57 states, 57 states have (on average 1.9824561403508771) internal successors, (113), 56 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:55:19,898 INFO L93 Difference]: Finished difference Result 128 states and 132 transitions. [2021-05-02 23:55:19,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 23:55:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.9824561403508771) internal successors, (113), 56 states have internal predecessors, (113), 2 states have call successors, (3), 3 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 117 [2021-05-02 23:55:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:55:19,899 INFO L225 Difference]: With dead ends: 128 [2021-05-02 23:55:19,899 INFO L226 Difference]: Without dead ends: 121 [2021-05-02 23:55:19,900 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 7 SyntacticMatches, 54 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 5182.3ms TimeCoverageRelationStatistics Valid=441, Invalid=12215, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 23:55:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-05-02 23:55:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-05-02 23:55:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2021-05-02 23:55:19,906 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 117 [2021-05-02 23:55:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:55:19,907 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2021-05-02 23:55:19,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 1.9824561403508771) internal successors, (113), 56 states have internal predecessors, (113), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:19,907 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2021-05-02 23:55:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 23:55:19,907 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:55:19,907 INFO L523 BasicCegarLoop]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:55:19,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-05-02 23:55:19,908 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:55:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:55:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash 134956800, now seen corresponding path program 54 times [2021-05-02 23:55:19,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:55:19,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687945313] [2021-05-02 23:55:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:55:19,912 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1705 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1705} OutVars{main_~x~0=v_main_~x~0_1705} AuxVars[] AssignedVars[] [2021-05-02 23:55:19,913 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:55:19,921 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:19,933 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:55:19,945 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:55:19,964 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:19,965 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1707 4294967296) 10000000) (< (mod (+ v_main_~x~0_1707 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1707} OutVars{main_~x~0=v_main_~x~0_1707} AuxVars[] AssignedVars[] [2021-05-02 23:55:19,966 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:55:19,979 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:19,980 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:20,026 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:55:20,039 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:55:20,066 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:55:20,093 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:55:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:55:23,092 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:55:23,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687945313] [2021-05-02 23:55:23,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1687945313] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:55:23,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:55:23,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-02 23:55:23,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566279068] [2021-05-02 23:55:23,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 23:55:23,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:55:23,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 23:55:23,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=3366, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 23:55:23,094 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:55:28,047 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2021-05-02 23:55:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 23:55:28,048 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (3), 3 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 119 [2021-05-02 23:55:28,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:55:28,049 INFO L225 Difference]: With dead ends: 130 [2021-05-02 23:55:28,049 INFO L226 Difference]: Without dead ends: 123 [2021-05-02 23:55:28,049 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 6 SyntacticMatches, 56 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 5296.7ms TimeCoverageRelationStatistics Valid=449, Invalid=12661, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 23:55:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-05-02 23:55:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-05-02 23:55:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:28,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2021-05-02 23:55:28,056 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 119 [2021-05-02 23:55:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:55:28,056 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2021-05-02 23:55:28,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 1.9827586206896552) internal successors, (115), 57 states have internal predecessors, (115), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:28,057 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2021-05-02 23:55:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 23:55:28,057 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:55:28,057 INFO L523 BasicCegarLoop]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:55:28,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-05-02 23:55:28,057 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:55:28,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:55:28,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1919798045, now seen corresponding path program 55 times [2021-05-02 23:55:28,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:55:28,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695581910] [2021-05-02 23:55:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:55:28,062 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1764 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1764} OutVars{main_~x~0=v_main_~x~0_1764} AuxVars[] AssignedVars[] [2021-05-02 23:55:28,063 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:55:28,064 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:28,075 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:55:28,093 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:55:28,115 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:28,116 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1766 4294967296) 10000000) (< (mod (+ v_main_~x~0_1766 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1766} OutVars{main_~x~0=v_main_~x~0_1766} AuxVars[] AssignedVars[] [2021-05-02 23:55:28,117 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:55:28,118 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:28,120 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:30,265 WARN L205 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:55:30,294 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:55:30,298 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:55:30,337 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:55:30,373 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:30,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:55:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:55:33,508 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:55:33,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695581910] [2021-05-02 23:55:33,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1695581910] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:55:33,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:55:33,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2021-05-02 23:55:33,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986643298] [2021-05-02 23:55:33,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 23:55:33,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:55:33,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 23:55:33,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3483, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 23:55:33,511 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:38,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:55:38,704 INFO L93 Difference]: Finished difference Result 132 states and 136 transitions. [2021-05-02 23:55:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 23:55:38,705 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 2 states have call successors, (3), 3 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 121 [2021-05-02 23:55:38,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:55:38,706 INFO L225 Difference]: With dead ends: 132 [2021-05-02 23:55:38,706 INFO L226 Difference]: Without dead ends: 125 [2021-05-02 23:55:38,706 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 6 SyntacticMatches, 57 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 5518.9ms TimeCoverageRelationStatistics Valid=457, Invalid=13115, Unknown=0, NotChecked=0, Total=13572 [2021-05-02 23:55:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-05-02 23:55:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-05-02 23:55:38,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2021-05-02 23:55:38,713 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 121 [2021-05-02 23:55:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:55:38,713 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2021-05-02 23:55:38,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2021-05-02 23:55:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 23:55:38,714 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:55:38,714 INFO L523 BasicCegarLoop]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:55:38,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-05-02 23:55:38,714 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:55:38,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:55:38,715 INFO L82 PathProgramCache]: Analyzing trace with hash -834683910, now seen corresponding path program 56 times [2021-05-02 23:55:38,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:55:38,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858391443] [2021-05-02 23:55:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:55:38,724 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1824 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1824} OutVars{main_~x~0=v_main_~x~0_1824} AuxVars[] AssignedVars[] [2021-05-02 23:55:38,725 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:55:38,733 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:38,749 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:55:38,768 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:55:38,793 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:38,795 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1826 1) 4294967296) 100000000) (< (mod v_main_~x~0_1826 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1826} OutVars{main_~x~0=v_main_~x~0_1826} AuxVars[] AssignedVars[] [2021-05-02 23:55:38,796 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:55:38,797 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:38,799 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:42,826 WARN L205 SmtUtils]: Spent 4.03 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:55:43,271 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:55:43,291 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:55:43,296 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:55:43,340 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:55:43,362 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:43,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:55:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:55:46,735 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:55:46,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858391443] [2021-05-02 23:55:46,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [858391443] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:55:46,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:55:46,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-02 23:55:46,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009065032] [2021-05-02 23:55:46,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 23:55:46,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:55:46,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 23:55:46,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=3602, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 23:55:46,737 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:52,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:55:52,443 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2021-05-02 23:55:52,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 23:55:52,444 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (3), 3 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 123 [2021-05-02 23:55:52,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:55:52,444 INFO L225 Difference]: With dead ends: 134 [2021-05-02 23:55:52,445 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 23:55:52,445 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 6 SyntacticMatches, 58 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 5951.1ms TimeCoverageRelationStatistics Valid=465, Invalid=13577, Unknown=0, NotChecked=0, Total=14042 [2021-05-02 23:55:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 23:55:52,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-05-02 23:55:52,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2021-05-02 23:55:52,452 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 123 [2021-05-02 23:55:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:55:52,453 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2021-05-02 23:55:52,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 1.9833333333333334) internal successors, (119), 59 states have internal predecessors, (119), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:55:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2021-05-02 23:55:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 23:55:52,453 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:55:52,453 INFO L523 BasicCegarLoop]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:55:52,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-05-02 23:55:52,454 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:55:52,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:55:52,454 INFO L82 PathProgramCache]: Analyzing trace with hash 2102978967, now seen corresponding path program 57 times [2021-05-02 23:55:52,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:55:52,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851432164] [2021-05-02 23:55:52,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:55:52,460 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1885 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1885} OutVars{main_~x~0=v_main_~x~0_1885} AuxVars[] AssignedVars[] [2021-05-02 23:55:52,462 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:55:52,470 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:52,484 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:55:52,532 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:55:52,558 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:52,559 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_1887 1) 4294967296) 100000000) (< (mod v_main_~x~0_1887 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_1887} OutVars{main_~x~0=v_main_~x~0_1887} AuxVars[] AssignedVars[] [2021-05-02 23:55:52,561 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:55:52,561 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:52,563 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:55:52,694 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-02 23:55:52,752 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:55:52,756 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:55:52,802 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:55:52,829 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:55:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:52,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:55:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:55:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:55:56,682 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:55:56,683 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851432164] [2021-05-02 23:55:56,683 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [851432164] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:55:56,683 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:55:56,683 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2021-05-02 23:55:56,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414856520] [2021-05-02 23:55:56,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 23:55:56,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:55:56,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 23:55:56,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=3723, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 23:55:56,684 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:56:03,234 INFO L93 Difference]: Finished difference Result 136 states and 140 transitions. [2021-05-02 23:56:03,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 23:56:03,235 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 2 states have call successors, (3), 3 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 125 [2021-05-02 23:56:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:56:03,235 INFO L225 Difference]: With dead ends: 136 [2021-05-02 23:56:03,236 INFO L226 Difference]: Without dead ends: 129 [2021-05-02 23:56:03,236 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 6 SyntacticMatches, 59 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1880 ImplicationChecksByTransitivity, 6810.7ms TimeCoverageRelationStatistics Valid=473, Invalid=14047, Unknown=0, NotChecked=0, Total=14520 [2021-05-02 23:56:03,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-05-02 23:56:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-05-02 23:56:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2021-05-02 23:56:03,243 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 125 [2021-05-02 23:56:03,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:56:03,244 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2021-05-02 23:56:03,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 60 states have internal predecessors, (121), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:03,244 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2021-05-02 23:56:03,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 23:56:03,244 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:56:03,244 INFO L523 BasicCegarLoop]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:56:03,244 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-05-02 23:56:03,245 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:56:03,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:56:03,245 INFO L82 PathProgramCache]: Analyzing trace with hash -891477004, now seen corresponding path program 58 times [2021-05-02 23:56:03,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:56:03,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383537846] [2021-05-02 23:56:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:56:03,251 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_1947 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_1947} OutVars{main_~x~0=v_main_~x~0_1947} AuxVars[] AssignedVars[] [2021-05-02 23:56:03,252 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:56:03,261 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:03,279 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:56:03,292 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:56:03,319 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:03,320 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_1949 4294967296) 10000000) (< (mod (+ v_main_~x~0_1949 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_1949} OutVars{main_~x~0=v_main_~x~0_1949} AuxVars[] AssignedVars[] [2021-05-02 23:56:03,322 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:56:03,323 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:03,325 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:03,551 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:56:03,576 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:56:03,587 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:56:03,640 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:56:03,681 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:03,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:56:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:56:07,330 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:56:07,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383537846] [2021-05-02 23:56:07,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [383537846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:56:07,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:56:07,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-02 23:56:07,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941438307] [2021-05-02 23:56:07,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 23:56:07,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:56:07,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 23:56:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3846, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 23:56:07,332 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 62 states, 62 states have (on average 1.9838709677419355) internal successors, (123), 61 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:56:13,324 INFO L93 Difference]: Finished difference Result 138 states and 142 transitions. [2021-05-02 23:56:13,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 23:56:13,325 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.9838709677419355) internal successors, (123), 61 states have internal predecessors, (123), 2 states have call successors, (3), 3 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 127 [2021-05-02 23:56:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:56:13,326 INFO L225 Difference]: With dead ends: 138 [2021-05-02 23:56:13,326 INFO L226 Difference]: Without dead ends: 131 [2021-05-02 23:56:13,327 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 6 SyntacticMatches, 60 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 6349.3ms TimeCoverageRelationStatistics Valid=481, Invalid=14525, Unknown=0, NotChecked=0, Total=15006 [2021-05-02 23:56:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-05-02 23:56:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-05-02 23:56:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2021-05-02 23:56:13,344 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2021-05-02 23:56:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:56:13,344 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2021-05-02 23:56:13,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 1.9838709677419355) internal successors, (123), 61 states have internal predecessors, (123), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2021-05-02 23:56:13,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 23:56:13,345 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:56:13,345 INFO L523 BasicCegarLoop]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:56:13,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-05-02 23:56:13,345 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:56:13,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:56:13,345 INFO L82 PathProgramCache]: Analyzing trace with hash -935576815, now seen corresponding path program 59 times [2021-05-02 23:56:13,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:56:13,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930029101] [2021-05-02 23:56:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:56:13,351 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2010 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2010} OutVars{main_~x~0=v_main_~x~0_2010} AuxVars[] AssignedVars[] [2021-05-02 23:56:13,352 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:56:13,353 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:13,368 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:56:13,393 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:56:13,414 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:13,416 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_2012 1) 4294967296) 100000000) (< (mod v_main_~x~0_2012 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_2012} OutVars{main_~x~0=v_main_~x~0_2012} AuxVars[] AssignedVars[] [2021-05-02 23:56:13,417 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:56:13,418 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:13,420 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:13,496 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:56:13,499 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:56:13,531 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:56:13,554 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:13,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:56:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:56:17,313 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:56:17,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930029101] [2021-05-02 23:56:17,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [930029101] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:56:17,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:56:17,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2021-05-02 23:56:17,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12660921] [2021-05-02 23:56:17,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 23:56:17,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:56:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 23:56:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3971, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 23:56:17,314 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 63 states, 63 states have (on average 1.9841269841269842) internal successors, (125), 62 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:56:23,719 INFO L93 Difference]: Finished difference Result 140 states and 144 transitions. [2021-05-02 23:56:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 23:56:23,719 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.9841269841269842) internal successors, (125), 62 states have internal predecessors, (125), 2 states have call successors, (3), 3 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 129 [2021-05-02 23:56:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:56:23,720 INFO L225 Difference]: With dead ends: 140 [2021-05-02 23:56:23,720 INFO L226 Difference]: Without dead ends: 133 [2021-05-02 23:56:23,721 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 6 SyntacticMatches, 61 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 6645.4ms TimeCoverageRelationStatistics Valid=489, Invalid=15011, Unknown=0, NotChecked=0, Total=15500 [2021-05-02 23:56:23,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-05-02 23:56:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-05-02 23:56:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2021-05-02 23:56:23,741 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 129 [2021-05-02 23:56:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:56:23,742 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2021-05-02 23:56:23,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 1.9841269841269842) internal successors, (125), 62 states have internal predecessors, (125), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2021-05-02 23:56:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 23:56:23,742 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:56:23,742 INFO L523 BasicCegarLoop]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:56:23,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-05-02 23:56:23,743 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:56:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:56:23,743 INFO L82 PathProgramCache]: Analyzing trace with hash -365822226, now seen corresponding path program 60 times [2021-05-02 23:56:23,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:56:23,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605156475] [2021-05-02 23:56:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:56:23,749 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2074 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2074} OutVars{main_~x~0=v_main_~x~0_2074} AuxVars[] AssignedVars[] [2021-05-02 23:56:23,750 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:56:23,759 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:23,774 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:56:23,787 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:56:23,806 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:23,807 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2076 4294967296) 10000000) (< (mod (+ v_main_~x~0_2076 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2076} OutVars{main_~x~0=v_main_~x~0_2076} AuxVars[] AssignedVars[] [2021-05-02 23:56:23,811 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:56:23,812 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:23,813 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:23,916 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:56:23,937 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:56:23,942 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:56:23,981 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:56:24,010 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:24,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:56:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:56:27,837 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:56:27,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605156475] [2021-05-02 23:56:27,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1605156475] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:56:27,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:56:27,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-02 23:56:27,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438865529] [2021-05-02 23:56:27,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 23:56:27,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:56:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 23:56:27,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=4098, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 23:56:27,839 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:56:34,375 INFO L93 Difference]: Finished difference Result 142 states and 146 transitions. [2021-05-02 23:56:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 23:56:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (3), 3 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 131 [2021-05-02 23:56:34,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:56:34,376 INFO L225 Difference]: With dead ends: 142 [2021-05-02 23:56:34,376 INFO L226 Difference]: Without dead ends: 135 [2021-05-02 23:56:34,377 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 7 SyntacticMatches, 61 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2069 ImplicationChecksByTransitivity, 6771.7ms TimeCoverageRelationStatistics Valid=497, Invalid=15505, Unknown=0, NotChecked=0, Total=16002 [2021-05-02 23:56:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-05-02 23:56:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-05-02 23:56:34,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2021-05-02 23:56:34,384 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 131 [2021-05-02 23:56:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:56:34,384 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2021-05-02 23:56:34,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 1.984375) internal successors, (127), 63 states have internal predecessors, (127), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2021-05-02 23:56:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 23:56:34,385 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:56:34,385 INFO L523 BasicCegarLoop]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:56:34,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-05-02 23:56:34,385 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:56:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:56:34,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1707491211, now seen corresponding path program 61 times [2021-05-02 23:56:34,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:56:34,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256949638] [2021-05-02 23:56:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:56:34,393 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2139 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2139} OutVars{main_~x~0=v_main_~x~0_2139} AuxVars[] AssignedVars[] [2021-05-02 23:56:34,395 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:56:34,396 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:34,428 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:56:34,450 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:56:34,476 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:34,478 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2141 4294967296) 10000000) (< (mod (+ v_main_~x~0_2141 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2141} OutVars{main_~x~0=v_main_~x~0_2141} AuxVars[] AssignedVars[] [2021-05-02 23:56:34,480 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:56:34,480 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:34,482 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:35,238 WARN L205 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:56:35,266 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:56:35,270 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:56:35,330 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:56:35,351 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:56:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:56:39,356 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:56:39,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256949638] [2021-05-02 23:56:39,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [256949638] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:56:39,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:56:39,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-05-02 23:56:39,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571604668] [2021-05-02 23:56:39,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 23:56:39,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:56:39,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 23:56:39,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=4227, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 23:56:39,358 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 65 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 64 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:46,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:56:46,168 INFO L93 Difference]: Finished difference Result 144 states and 148 transitions. [2021-05-02 23:56:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 23:56:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 64 states have internal predecessors, (129), 2 states have call successors, (3), 3 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 133 [2021-05-02 23:56:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:56:46,170 INFO L225 Difference]: With dead ends: 144 [2021-05-02 23:56:46,170 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 23:56:46,171 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 6 SyntacticMatches, 63 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 7052.0ms TimeCoverageRelationStatistics Valid=505, Invalid=16007, Unknown=0, NotChecked=0, Total=16512 [2021-05-02 23:56:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 23:56:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-05-02 23:56:46,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:46,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2021-05-02 23:56:46,178 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 133 [2021-05-02 23:56:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:56:46,178 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2021-05-02 23:56:46,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 1.9846153846153847) internal successors, (129), 64 states have internal predecessors, (129), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:46,179 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2021-05-02 23:56:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 23:56:46,179 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:56:46,179 INFO L523 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:56:46,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-05-02 23:56:46,179 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:56:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:56:46,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1296878824, now seen corresponding path program 62 times [2021-05-02 23:56:46,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:56:46,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018397807] [2021-05-02 23:56:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:56:46,185 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2205 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2205} OutVars{main_~x~0=v_main_~x~0_2205} AuxVars[] AssignedVars[] [2021-05-02 23:56:46,187 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:56:46,187 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:46,203 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:56:46,230 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:56:46,256 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:46,258 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2207 4294967296) 10000000) (< (mod (+ v_main_~x~0_2207 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2207} OutVars{main_~x~0=v_main_~x~0_2207} AuxVars[] AssignedVars[] [2021-05-02 23:56:46,260 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:56:46,261 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:46,262 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:47,862 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:56:47,882 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:56:47,888 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:56:48,033 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:56:48,058 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:48,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:56:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:56:52,357 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:56:52,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018397807] [2021-05-02 23:56:52,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2018397807] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:56:52,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:56:52,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-02 23:56:52,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332551675] [2021-05-02 23:56:52,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 23:56:52,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:56:52,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 23:56:52,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=4358, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 23:56:52,359 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:59,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:56:59,394 INFO L93 Difference]: Finished difference Result 146 states and 150 transitions. [2021-05-02 23:56:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 23:56:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (3), 3 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 135 [2021-05-02 23:56:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:56:59,396 INFO L225 Difference]: With dead ends: 146 [2021-05-02 23:56:59,396 INFO L226 Difference]: Without dead ends: 139 [2021-05-02 23:56:59,397 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 6 SyntacticMatches, 64 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 7423.6ms TimeCoverageRelationStatistics Valid=513, Invalid=16517, Unknown=0, NotChecked=0, Total=17030 [2021-05-02 23:56:59,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-05-02 23:56:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-05-02 23:56:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 140 transitions. [2021-05-02 23:56:59,404 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 140 transitions. Word has length 135 [2021-05-02 23:56:59,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:56:59,404 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 140 transitions. [2021-05-02 23:56:59,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 1.9848484848484849) internal successors, (131), 65 states have internal predecessors, (131), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:56:59,404 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 140 transitions. [2021-05-02 23:56:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 23:56:59,405 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:56:59,405 INFO L523 BasicCegarLoop]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:56:59,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-05-02 23:56:59,405 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:56:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:56:59,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1835366149, now seen corresponding path program 63 times [2021-05-02 23:56:59,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:56:59,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400113830] [2021-05-02 23:56:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:56:59,411 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2272 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2272} OutVars{main_~x~0=v_main_~x~0_2272} AuxVars[] AssignedVars[] [2021-05-02 23:56:59,412 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:56:59,412 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:59,435 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:56:59,454 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:56:59,477 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:59,478 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2274 4294967296) 10000000) (< (mod (+ v_main_~x~0_2274 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2274} OutVars{main_~x~0=v_main_~x~0_2274} AuxVars[] AssignedVars[] [2021-05-02 23:56:59,479 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:56:59,493 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:59,495 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:56:59,639 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:56:59,659 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:56:59,663 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:56:59,687 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:56:59,709 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:56:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:59,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:56:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:56:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:04,051 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:04,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400113830] [2021-05-02 23:57:04,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [400113830] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:04,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:04,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2021-05-02 23:57:04,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008886760] [2021-05-02 23:57:04,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 23:57:04,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:04,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 23:57:04,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 23:57:04,053 INFO L87 Difference]: Start difference. First operand 139 states and 140 transitions. Second operand has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:11,540 INFO L93 Difference]: Finished difference Result 148 states and 152 transitions. [2021-05-02 23:57:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 23:57:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 2 states have call successors, (3), 3 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 137 [2021-05-02 23:57:11,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:11,541 INFO L225 Difference]: With dead ends: 148 [2021-05-02 23:57:11,541 INFO L226 Difference]: Without dead ends: 141 [2021-05-02 23:57:11,543 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 6 SyntacticMatches, 65 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 7658.4ms TimeCoverageRelationStatistics Valid=521, Invalid=17035, Unknown=0, NotChecked=0, Total=17556 [2021-05-02 23:57:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-05-02 23:57:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-05-02 23:57:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2021-05-02 23:57:11,550 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 137 [2021-05-02 23:57:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:11,550 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2021-05-02 23:57:11,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 1.9850746268656716) internal successors, (133), 66 states have internal predecessors, (133), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2021-05-02 23:57:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 23:57:11,551 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:11,551 INFO L523 BasicCegarLoop]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:11,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-05-02 23:57:11,551 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:11,552 INFO L82 PathProgramCache]: Analyzing trace with hash -369357342, now seen corresponding path program 64 times [2021-05-02 23:57:11,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:11,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350045954] [2021-05-02 23:57:11,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:11,557 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2340 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2340} OutVars{main_~x~0=v_main_~x~0_2340} AuxVars[] AssignedVars[] [2021-05-02 23:57:11,558 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:57:11,567 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:11,585 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:57:11,601 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:57:11,624 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:11,625 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_2342 1) 4294967296) 100000000) (< (mod v_main_~x~0_2342 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_2342} OutVars{main_~x~0=v_main_~x~0_2342} AuxVars[] AssignedVars[] [2021-05-02 23:57:11,626 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:57:11,627 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:11,629 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:13,208 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:57:13,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:57:13,251 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:57:13,297 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:57:13,325 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:13,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:17,887 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:17,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350045954] [2021-05-02 23:57:17,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [350045954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:17,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:17,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-02 23:57:17,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982650104] [2021-05-02 23:57:17,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 23:57:17,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:17,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 23:57:17,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=4626, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 23:57:17,888 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:25,443 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2021-05-02 23:57:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 23:57:25,444 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (3), 3 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 139 [2021-05-02 23:57:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:25,445 INFO L225 Difference]: With dead ends: 150 [2021-05-02 23:57:25,445 INFO L226 Difference]: Without dead ends: 143 [2021-05-02 23:57:25,446 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 7 SyntacticMatches, 65 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2335 ImplicationChecksByTransitivity, 7920.0ms TimeCoverageRelationStatistics Valid=529, Invalid=17561, Unknown=0, NotChecked=0, Total=18090 [2021-05-02 23:57:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-05-02 23:57:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-05-02 23:57:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.0144927536231885) internal successors, (140), 138 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2021-05-02 23:57:25,453 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 139 [2021-05-02 23:57:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:25,453 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2021-05-02 23:57:25,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 67 states have internal predecessors, (135), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2021-05-02 23:57:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 23:57:25,454 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:25,454 INFO L523 BasicCegarLoop]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:25,454 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-05-02 23:57:25,454 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:25,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:25,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1689755265, now seen corresponding path program 65 times [2021-05-02 23:57:25,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:25,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049988017] [2021-05-02 23:57:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:25,463 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2409 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2409} OutVars{main_~x~0=v_main_~x~0_2409} AuxVars[] AssignedVars[] [2021-05-02 23:57:25,464 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:57:25,465 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:25,480 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:57:25,502 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:57:25,524 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:25,526 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_2411 1) 4294967296) 100000000) (< (mod v_main_~x~0_2411 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_2411} OutVars{main_~x~0=v_main_~x~0_2411} AuxVars[] AssignedVars[] [2021-05-02 23:57:25,527 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:57:25,541 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:25,542 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:26,007 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:57:26,037 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:57:26,044 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:57:26,070 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:57:26,091 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:26,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:30,605 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:30,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049988017] [2021-05-02 23:57:30,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2049988017] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:30,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:30,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2021-05-02 23:57:30,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68201263] [2021-05-02 23:57:30,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 23:57:30,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:30,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 23:57:30,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=4763, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 23:57:30,607 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 69 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:38,406 INFO L93 Difference]: Finished difference Result 152 states and 156 transitions. [2021-05-02 23:57:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 23:57:38,407 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (3), 3 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 141 [2021-05-02 23:57:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:38,407 INFO L225 Difference]: With dead ends: 152 [2021-05-02 23:57:38,407 INFO L226 Difference]: Without dead ends: 145 [2021-05-02 23:57:38,409 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 7 SyntacticMatches, 66 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 7982.4ms TimeCoverageRelationStatistics Valid=537, Invalid=18095, Unknown=0, NotChecked=0, Total=18632 [2021-05-02 23:57:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-05-02 23:57:38,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-05-02 23:57:38,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2021-05-02 23:57:38,417 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 141 [2021-05-02 23:57:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:38,417 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2021-05-02 23:57:38,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 1.9855072463768115) internal successors, (137), 68 states have internal predecessors, (137), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:38,417 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2021-05-02 23:57:38,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 23:57:38,418 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:38,418 INFO L523 BasicCegarLoop]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:38,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-05-02 23:57:38,418 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:38,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:38,418 INFO L82 PathProgramCache]: Analyzing trace with hash 718160348, now seen corresponding path program 66 times [2021-05-02 23:57:38,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:38,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826973824] [2021-05-02 23:57:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:38,424 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2479 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2479} OutVars{main_~x~0=v_main_~x~0_2479} AuxVars[] AssignedVars[] [2021-05-02 23:57:38,425 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:57:38,426 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:38,440 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:57:38,464 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:57:38,485 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:38,486 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2481 4294967296) 10000000) (< (mod (+ v_main_~x~0_2481 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2481} OutVars{main_~x~0=v_main_~x~0_2481} AuxVars[] AssignedVars[] [2021-05-02 23:57:38,488 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:57:38,488 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:38,490 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:39,184 WARN L205 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:57:39,215 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:57:39,219 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:57:39,267 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:57:39,293 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:44,069 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:44,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826973824] [2021-05-02 23:57:44,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1826973824] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:44,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:44,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-02 23:57:44,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360014638] [2021-05-02 23:57:44,070 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 23:57:44,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:44,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 23:57:44,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=4902, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 23:57:44,071 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 70 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 69 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:57:52,253 INFO L93 Difference]: Finished difference Result 154 states and 158 transitions. [2021-05-02 23:57:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 23:57:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 69 states have internal predecessors, (139), 2 states have call successors, (3), 3 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 143 [2021-05-02 23:57:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:57:52,254 INFO L225 Difference]: With dead ends: 154 [2021-05-02 23:57:52,254 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 23:57:52,255 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 6 SyntacticMatches, 68 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2474 ImplicationChecksByTransitivity, 8392.3ms TimeCoverageRelationStatistics Valid=545, Invalid=18637, Unknown=0, NotChecked=0, Total=19182 [2021-05-02 23:57:52,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 23:57:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-05-02 23:57:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 142 states have internal predecessors, (144), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 148 transitions. [2021-05-02 23:57:52,263 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 148 transitions. Word has length 143 [2021-05-02 23:57:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:57:52,263 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 148 transitions. [2021-05-02 23:57:52,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 1.9857142857142858) internal successors, (139), 69 states have internal predecessors, (139), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:57:52,263 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 148 transitions. [2021-05-02 23:57:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 23:57:52,263 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:57:52,263 INFO L523 BasicCegarLoop]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:57:52,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-05-02 23:57:52,264 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:57:52,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:57:52,264 INFO L82 PathProgramCache]: Analyzing trace with hash -262308103, now seen corresponding path program 67 times [2021-05-02 23:57:52,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:57:52,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774731752] [2021-05-02 23:57:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:57:52,269 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2550 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2550} OutVars{main_~x~0=v_main_~x~0_2550} AuxVars[] AssignedVars[] [2021-05-02 23:57:52,271 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:57:52,272 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:52,327 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:57:52,348 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:57:52,374 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:52,375 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2552 4294967296) 10000000) (< (mod (+ v_main_~x~0_2552 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2552} OutVars{main_~x~0=v_main_~x~0_2552} AuxVars[] AssignedVars[] [2021-05-02 23:57:52,376 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:57:52,377 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:52,378 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:57:52,737 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 3 DAG size of output: 1 [2021-05-02 23:57:52,755 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:57:52,763 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:57:52,798 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:57:52,823 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:57:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:57:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:57:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:57:58,111 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:57:58,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774731752] [2021-05-02 23:57:58,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1774731752] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:57:58,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:57:58,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-05-02 23:57:58,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200940360] [2021-05-02 23:57:58,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 23:57:58,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:57:58,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 23:57:58,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=5043, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 23:57:58,112 INFO L87 Difference]: Start difference. First operand 147 states and 148 transitions. Second operand has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 70 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:07,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:58:07,375 INFO L93 Difference]: Finished difference Result 156 states and 160 transitions. [2021-05-02 23:58:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 23:58:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 70 states have internal predecessors, (141), 2 states have call successors, (3), 3 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 145 [2021-05-02 23:58:07,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:58:07,376 INFO L225 Difference]: With dead ends: 156 [2021-05-02 23:58:07,376 INFO L226 Difference]: Without dead ends: 149 [2021-05-02 23:58:07,377 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 6 SyntacticMatches, 69 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 9347.6ms TimeCoverageRelationStatistics Valid=553, Invalid=19187, Unknown=0, NotChecked=0, Total=19740 [2021-05-02 23:58:07,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-05-02 23:58:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2021-05-02 23:58:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2021-05-02 23:58:07,384 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 145 [2021-05-02 23:58:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:58:07,384 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2021-05-02 23:58:07,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 1.9859154929577465) internal successors, (141), 70 states have internal predecessors, (141), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2021-05-02 23:58:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 23:58:07,385 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:58:07,385 INFO L523 BasicCegarLoop]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:58:07,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-05-02 23:58:07,385 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:58:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:58:07,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1894651690, now seen corresponding path program 68 times [2021-05-02 23:58:07,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:58:07,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367900946] [2021-05-02 23:58:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:58:07,390 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2622 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2622} OutVars{main_~x~0=v_main_~x~0_2622} AuxVars[] AssignedVars[] [2021-05-02 23:58:07,391 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:58:07,400 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:07,420 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:58:07,434 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:58:07,455 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:07,457 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2624 4294967296) 10000000) (< (mod (+ v_main_~x~0_2624 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2624} OutVars{main_~x~0=v_main_~x~0_2624} AuxVars[] AssignedVars[] [2021-05-02 23:58:07,458 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:58:07,471 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:07,473 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:07,538 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:58:07,544 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:58:07,581 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:58:07,605 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:07,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:58:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:58:12,886 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:58:12,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367900946] [2021-05-02 23:58:12,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [367900946] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:58:12,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:58:12,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-02 23:58:12,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378090088] [2021-05-02 23:58:12,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 23:58:12,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:58:12,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 23:58:12,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=5186, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 23:58:12,888 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 71 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:21,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:58:21,869 INFO L93 Difference]: Finished difference Result 158 states and 162 transitions. [2021-05-02 23:58:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 23:58:21,869 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 71 states have internal predecessors, (143), 2 states have call successors, (3), 3 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 147 [2021-05-02 23:58:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:58:21,870 INFO L225 Difference]: With dead ends: 158 [2021-05-02 23:58:21,870 INFO L226 Difference]: Without dead ends: 151 [2021-05-02 23:58:21,871 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 6 SyntacticMatches, 70 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2617 ImplicationChecksByTransitivity, 9167.9ms TimeCoverageRelationStatistics Valid=561, Invalid=19745, Unknown=0, NotChecked=0, Total=20306 [2021-05-02 23:58:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-05-02 23:58:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-05-02 23:58:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 146 states have internal predecessors, (148), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:21,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2021-05-02 23:58:21,878 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 147 [2021-05-02 23:58:21,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:58:21,878 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2021-05-02 23:58:21,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 71 states have internal predecessors, (143), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2021-05-02 23:58:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 23:58:21,879 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:58:21,879 INFO L523 BasicCegarLoop]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:58:21,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-05-02 23:58:21,879 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:58:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:58:21,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1381191539, now seen corresponding path program 69 times [2021-05-02 23:58:21,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:58:21,879 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836203518] [2021-05-02 23:58:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:58:21,885 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2695 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2695} OutVars{main_~x~0=v_main_~x~0_2695} AuxVars[] AssignedVars[] [2021-05-02 23:58:21,886 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:58:21,887 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:21,903 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:58:21,925 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:58:21,953 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:21,955 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_2697 1) 4294967296) 100000000) (< (mod v_main_~x~0_2697 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_2697} OutVars{main_~x~0=v_main_~x~0_2697} AuxVars[] AssignedVars[] [2021-05-02 23:58:21,956 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:58:21,957 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:21,959 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:22,026 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:58:22,034 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:58:22,077 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:58:22,107 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:22,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:58:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:58:27,630 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:58:27,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836203518] [2021-05-02 23:58:27,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [836203518] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:58:27,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:58:27,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2021-05-02 23:58:27,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272276052] [2021-05-02 23:58:27,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 23:58:27,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:58:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 23:58:27,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=5331, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 23:58:27,632 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 73 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 72 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:37,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:58:37,205 INFO L93 Difference]: Finished difference Result 160 states and 164 transitions. [2021-05-02 23:58:37,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 23:58:37,206 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 72 states have internal predecessors, (145), 2 states have call successors, (3), 3 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 149 [2021-05-02 23:58:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:58:37,206 INFO L225 Difference]: With dead ends: 160 [2021-05-02 23:58:37,206 INFO L226 Difference]: Without dead ends: 153 [2021-05-02 23:58:37,208 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 7 SyntacticMatches, 70 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2690 ImplicationChecksByTransitivity, 9662.4ms TimeCoverageRelationStatistics Valid=569, Invalid=20311, Unknown=0, NotChecked=0, Total=20880 [2021-05-02 23:58:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-05-02 23:58:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-05-02 23:58:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2021-05-02 23:58:37,215 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 149 [2021-05-02 23:58:37,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:58:37,215 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2021-05-02 23:58:37,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 1.9863013698630136) internal successors, (145), 72 states have internal predecessors, (145), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:37,215 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2021-05-02 23:58:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 23:58:37,216 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:58:37,216 INFO L523 BasicCegarLoop]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:58:37,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-05-02 23:58:37,216 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:58:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:58:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1255506640, now seen corresponding path program 70 times [2021-05-02 23:58:37,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:58:37,216 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931696163] [2021-05-02 23:58:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:58:37,222 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2769 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2769} OutVars{main_~x~0=v_main_~x~0_2769} AuxVars[] AssignedVars[] [2021-05-02 23:58:37,224 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:58:37,225 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:37,244 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:58:37,277 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:58:37,304 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:37,306 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_2771 1) 4294967296) 100000000) (< (mod v_main_~x~0_2771 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_2771} OutVars{main_~x~0=v_main_~x~0_2771} AuxVars[] AssignedVars[] [2021-05-02 23:58:37,308 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:58:37,324 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:37,326 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:37,952 WARN L205 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:58:37,980 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:58:37,984 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:58:38,033 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:58:38,059 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:38,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:58:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:58:44,153 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:58:44,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931696163] [2021-05-02 23:58:44,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [931696163] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:58:44,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:58:44,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-02 23:58:44,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103978252] [2021-05-02 23:58:44,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 23:58:44,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:58:44,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 23:58:44,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=5478, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 23:58:44,154 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 74 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 73 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:58:54,513 INFO L93 Difference]: Finished difference Result 162 states and 166 transitions. [2021-05-02 23:58:54,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 23:58:54,514 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 73 states have internal predecessors, (147), 2 states have call successors, (3), 3 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 151 [2021-05-02 23:58:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:58:54,515 INFO L225 Difference]: With dead ends: 162 [2021-05-02 23:58:54,515 INFO L226 Difference]: Without dead ends: 155 [2021-05-02 23:58:54,516 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 7 SyntacticMatches, 71 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2764 ImplicationChecksByTransitivity, 10531.0ms TimeCoverageRelationStatistics Valid=577, Invalid=20885, Unknown=0, NotChecked=0, Total=21462 [2021-05-02 23:58:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-05-02 23:58:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-05-02 23:58:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 150 states have internal predecessors, (152), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 156 transitions. [2021-05-02 23:58:54,523 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 156 transitions. Word has length 151 [2021-05-02 23:58:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:58:54,524 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 156 transitions. [2021-05-02 23:58:54,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 1.9864864864864864) internal successors, (147), 73 states have internal predecessors, (147), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:58:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 156 transitions. [2021-05-02 23:58:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 23:58:54,524 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:58:54,524 INFO L523 BasicCegarLoop]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:58:54,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-05-02 23:58:54,525 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:58:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:58:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash 731402989, now seen corresponding path program 71 times [2021-05-02 23:58:54,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:58:54,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200198846] [2021-05-02 23:58:54,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:58:54,533 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2844 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2844} OutVars{main_~x~0=v_main_~x~0_2844} AuxVars[] AssignedVars[] [2021-05-02 23:58:54,534 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:58:54,546 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:54,564 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:58:54,583 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:58:54,621 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:54,623 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_2846 1) 4294967296) 100000000) (< (mod v_main_~x~0_2846 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_2846} OutVars{main_~x~0=v_main_~x~0_2846} AuxVars[] AssignedVars[] [2021-05-02 23:58:54,624 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:58:54,640 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:54,646 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:58:54,713 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:58:54,718 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:58:54,824 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:58:54,849 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:58:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:54,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:58:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:58:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:59:01,147 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:59:01,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200198846] [2021-05-02 23:59:01,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [200198846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:59:01,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:59:01,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2021-05-02 23:59:01,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599679675] [2021-05-02 23:59:01,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 23:59:01,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:59:01,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 23:59:01,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=5627, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 23:59:01,148 INFO L87 Difference]: Start difference. First operand 155 states and 156 transitions. Second operand has 75 states, 75 states have (on average 1.9866666666666666) internal successors, (149), 74 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:59:12,193 INFO L93 Difference]: Finished difference Result 164 states and 168 transitions. [2021-05-02 23:59:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 23:59:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.9866666666666666) internal successors, (149), 74 states have internal predecessors, (149), 2 states have call successors, (3), 3 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 153 [2021-05-02 23:59:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:59:12,195 INFO L225 Difference]: With dead ends: 164 [2021-05-02 23:59:12,195 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 23:59:12,195 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 7 SyntacticMatches, 72 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2839 ImplicationChecksByTransitivity, 11015.7ms TimeCoverageRelationStatistics Valid=585, Invalid=21467, Unknown=0, NotChecked=0, Total=22052 [2021-05-02 23:59:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 23:59:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-05-02 23:59:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2021-05-02 23:59:12,202 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 153 [2021-05-02 23:59:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:59:12,203 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2021-05-02 23:59:12,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 1.9866666666666666) internal successors, (149), 74 states have internal predecessors, (149), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2021-05-02 23:59:12,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 23:59:12,203 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:59:12,203 INFO L523 BasicCegarLoop]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:59:12,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-05-02 23:59:12,203 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:59:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:59:12,204 INFO L82 PathProgramCache]: Analyzing trace with hash -421031990, now seen corresponding path program 72 times [2021-05-02 23:59:12,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:59:12,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354913509] [2021-05-02 23:59:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:59:12,214 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2920 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2920} OutVars{main_~x~0=v_main_~x~0_2920} AuxVars[] AssignedVars[] [2021-05-02 23:59:12,215 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:59:12,216 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:12,240 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:59:12,270 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:59:12,303 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:59:12,305 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2922 4294967296) 10000000) (< (mod (+ v_main_~x~0_2922 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2922} OutVars{main_~x~0=v_main_~x~0_2922} AuxVars[] AssignedVars[] [2021-05-02 23:59:12,306 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:59:12,325 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:12,327 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:12,402 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:59:12,408 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:59:12,447 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:59:12,480 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:59:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:59:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:59:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:59:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:59:19,459 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:59:19,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354913509] [2021-05-02 23:59:19,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [354913509] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:59:19,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:59:19,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-02 23:59:19,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93186654] [2021-05-02 23:59:19,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 23:59:19,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:59:19,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 23:59:19,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=5778, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 23:59:19,460 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:29,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:59:29,982 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2021-05-02 23:59:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 23:59:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (3), 3 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 155 [2021-05-02 23:59:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:59:29,984 INFO L225 Difference]: With dead ends: 166 [2021-05-02 23:59:29,984 INFO L226 Difference]: Without dead ends: 159 [2021-05-02 23:59:29,985 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 7 SyntacticMatches, 73 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2915 ImplicationChecksByTransitivity, 11455.2ms TimeCoverageRelationStatistics Valid=593, Invalid=22057, Unknown=0, NotChecked=0, Total=22650 [2021-05-02 23:59:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-05-02 23:59:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-05-02 23:59:29,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 154 states have internal predecessors, (156), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2021-05-02 23:59:29,992 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 155 [2021-05-02 23:59:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:59:29,992 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2021-05-02 23:59:29,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 1.986842105263158) internal successors, (151), 75 states have internal predecessors, (151), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:29,992 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2021-05-02 23:59:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 23:59:29,992 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:59:29,993 INFO L523 BasicCegarLoop]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:59:29,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-05-02 23:59:29,993 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:59:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:59:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 190515559, now seen corresponding path program 73 times [2021-05-02 23:59:29,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:59:29,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517208756] [2021-05-02 23:59:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:59:29,998 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_2997 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_2997} OutVars{main_~x~0=v_main_~x~0_2997} AuxVars[] AssignedVars[] [2021-05-02 23:59:29,999 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:59:30,000 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:30,023 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:59:30,049 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:59:30,078 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:59:30,079 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_2999 4294967296) 10000000) (< (mod (+ v_main_~x~0_2999 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_2999} OutVars{main_~x~0=v_main_~x~0_2999} AuxVars[] AssignedVars[] [2021-05-02 23:59:30,081 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:59:30,082 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:30,083 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:30,186 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:59:30,196 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:59:30,261 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:59:30,297 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:59:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:59:30,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:59:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:59:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:59:37,121 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:59:37,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517208756] [2021-05-02 23:59:37,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1517208756] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:59:37,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:59:37,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2021-05-02 23:59:37,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57640702] [2021-05-02 23:59:37,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 23:59:37,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:59:37,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 23:59:37,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=5931, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 23:59:37,122 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 77 states, 77 states have (on average 1.9870129870129871) internal successors, (153), 76 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:59:49,021 INFO L93 Difference]: Finished difference Result 168 states and 172 transitions. [2021-05-02 23:59:49,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 23:59:49,022 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 1.9870129870129871) internal successors, (153), 76 states have internal predecessors, (153), 2 states have call successors, (3), 3 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 157 [2021-05-02 23:59:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:59:49,023 INFO L225 Difference]: With dead ends: 168 [2021-05-02 23:59:49,023 INFO L226 Difference]: Without dead ends: 161 [2021-05-02 23:59:49,024 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 7 SyntacticMatches, 74 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 11834.7ms TimeCoverageRelationStatistics Valid=601, Invalid=22655, Unknown=0, NotChecked=0, Total=23256 [2021-05-02 23:59:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-05-02 23:59:49,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-05-02 23:59:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2021-05-02 23:59:49,032 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 157 [2021-05-02 23:59:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:59:49,032 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2021-05-02 23:59:49,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 1.9870129870129871) internal successors, (153), 76 states have internal predecessors, (153), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 23:59:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2021-05-02 23:59:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 23:59:49,033 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:59:49,033 INFO L523 BasicCegarLoop]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:59:49,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-05-02 23:59:49,033 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:59:49,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:59:49,033 INFO L82 PathProgramCache]: Analyzing trace with hash -522809404, now seen corresponding path program 74 times [2021-05-02 23:59:49,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:59:49,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282345544] [2021-05-02 23:59:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:59:49,041 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3075 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3075} OutVars{main_~x~0=v_main_~x~0_3075} AuxVars[] AssignedVars[] [2021-05-02 23:59:49,042 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-02 23:59:49,053 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:49,075 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-02 23:59:49,092 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-02 23:59:49,121 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:59:49,122 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_3077 4294967296) 10000000) (< (mod (+ v_main_~x~0_3077 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_3077} OutVars{main_~x~0=v_main_~x~0_3077} AuxVars[] AssignedVars[] [2021-05-02 23:59:49,124 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-02 23:59:49,128 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:49,130 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 23:59:49,408 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-02 23:59:49,440 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-02 23:59:49,451 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-02 23:59:49,520 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-02 23:59:49,557 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-02 23:59:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:59:49,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:59:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:59:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 23:59:56,786 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:59:56,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282345544] [2021-05-02 23:59:56,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [282345544] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:59:56,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:59:56,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-02 23:59:56,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027343452] [2021-05-02 23:59:56,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 23:59:56,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:59:56,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 23:59:56,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=6086, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 23:59:56,788 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 78 states, 78 states have (on average 1.9871794871794872) internal successors, (155), 77 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:00:09,693 INFO L93 Difference]: Finished difference Result 170 states and 174 transitions. [2021-05-03 00:00:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-03 00:00:09,694 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.9871794871794872) internal successors, (155), 77 states have internal predecessors, (155), 2 states have call successors, (3), 3 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 159 [2021-05-03 00:00:09,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:00:09,695 INFO L225 Difference]: With dead ends: 170 [2021-05-03 00:00:09,695 INFO L226 Difference]: Without dead ends: 163 [2021-05-03 00:00:09,696 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 7 SyntacticMatches, 75 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3070 ImplicationChecksByTransitivity, 12643.1ms TimeCoverageRelationStatistics Valid=609, Invalid=23261, Unknown=0, NotChecked=0, Total=23870 [2021-05-03 00:00:09,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-05-03 00:00:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-05-03 00:00:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 158 states have (on average 1.0126582278481013) internal successors, (160), 158 states have internal predecessors, (160), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 164 transitions. [2021-05-03 00:00:09,704 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 164 transitions. Word has length 159 [2021-05-03 00:00:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:00:09,704 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 164 transitions. [2021-05-03 00:00:09,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 1.9871794871794872) internal successors, (155), 77 states have internal predecessors, (155), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:09,704 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 164 transitions. [2021-05-03 00:00:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-03 00:00:09,705 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:00:09,705 INFO L523 BasicCegarLoop]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:00:09,705 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-05-03 00:00:09,705 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:00:09,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:00:09,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1166668513, now seen corresponding path program 75 times [2021-05-03 00:00:09,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:00:09,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904981369] [2021-05-03 00:00:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:00:09,714 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3154 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3154} OutVars{main_~x~0=v_main_~x~0_3154} AuxVars[] AssignedVars[] [2021-05-03 00:00:09,716 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:00:09,732 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:09,750 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:00:09,770 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:00:09,807 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:00:09,809 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_3156 1) 4294967296) 100000000) (< (mod v_main_~x~0_3156 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_3156} OutVars{main_~x~0=v_main_~x~0_3156} AuxVars[] AssignedVars[] [2021-05-03 00:00:09,810 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:00:09,811 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:09,813 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:10,082 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-03 00:00:10,119 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:00:10,127 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:00:10,185 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:00:10,219 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:00:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:00:10,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:00:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:00:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:00:18,401 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:00:18,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904981369] [2021-05-03 00:00:18,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1904981369] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:00:18,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:00:18,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2021-05-03 00:00:18,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060256134] [2021-05-03 00:00:18,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-03 00:00:18,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:00:18,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-03 00:00:18,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=6243, Unknown=0, NotChecked=0, Total=6480 [2021-05-03 00:00:18,402 INFO L87 Difference]: Start difference. First operand 163 states and 164 transitions. Second operand has 79 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 78 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:00:33,829 INFO L93 Difference]: Finished difference Result 172 states and 176 transitions. [2021-05-03 00:00:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-03 00:00:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 78 states have internal predecessors, (157), 2 states have call successors, (3), 3 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 161 [2021-05-03 00:00:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:00:33,831 INFO L225 Difference]: With dead ends: 172 [2021-05-03 00:00:33,831 INFO L226 Difference]: Without dead ends: 165 [2021-05-03 00:00:33,832 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 6 SyntacticMatches, 77 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3149 ImplicationChecksByTransitivity, 14553.8ms TimeCoverageRelationStatistics Valid=617, Invalid=23875, Unknown=0, NotChecked=0, Total=24492 [2021-05-03 00:00:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-05-03 00:00:33,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-05-03 00:00:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.0125) internal successors, (162), 160 states have internal predecessors, (162), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:33,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2021-05-03 00:00:33,840 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 161 [2021-05-03 00:00:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:00:33,840 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2021-05-03 00:00:33,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 1.9873417721518987) internal successors, (157), 78 states have internal predecessors, (157), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2021-05-03 00:00:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-03 00:00:33,841 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:00:33,841 INFO L523 BasicCegarLoop]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:00:33,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-05-03 00:00:33,841 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:00:33,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:00:33,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1257308862, now seen corresponding path program 76 times [2021-05-03 00:00:33,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:00:33,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696309127] [2021-05-03 00:00:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:00:33,857 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3234 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3234} OutVars{main_~x~0=v_main_~x~0_3234} AuxVars[] AssignedVars[] [2021-05-03 00:00:33,859 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:00:33,870 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:33,907 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:00:33,931 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:00:33,964 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:00:33,965 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_3236 4294967296) 10000000) (< (mod (+ v_main_~x~0_3236 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_3236} OutVars{main_~x~0=v_main_~x~0_3236} AuxVars[] AssignedVars[] [2021-05-03 00:00:33,967 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:00:33,988 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:33,990 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:34,118 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 1 [2021-05-03 00:00:34,135 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:00:34,143 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:00:34,208 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:00:34,238 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:00:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:00:34,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:00:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:00:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:00:42,248 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:00:42,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696309127] [2021-05-03 00:00:42,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696309127] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:00:42,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:00:42,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-03 00:00:42,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046604972] [2021-05-03 00:00:42,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-03 00:00:42,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:00:42,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-03 00:00:42,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=6402, Unknown=0, NotChecked=0, Total=6642 [2021-05-03 00:00:42,249 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:00:57,014 INFO L93 Difference]: Finished difference Result 174 states and 178 transitions. [2021-05-03 00:00:57,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-03 00:00:57,015 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (3), 3 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 163 [2021-05-03 00:00:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:00:57,016 INFO L225 Difference]: With dead ends: 174 [2021-05-03 00:00:57,016 INFO L226 Difference]: Without dead ends: 167 [2021-05-03 00:00:57,017 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 6 SyntacticMatches, 78 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 14039.8ms TimeCoverageRelationStatistics Valid=625, Invalid=24497, Unknown=0, NotChecked=0, Total=25122 [2021-05-03 00:00:57,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-03 00:00:57,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-05-03 00:00:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 162 states have internal predecessors, (164), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2021-05-03 00:00:57,024 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 163 [2021-05-03 00:00:57,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:00:57,024 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2021-05-03 00:00:57,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 1.9875) internal successors, (159), 79 states have internal predecessors, (159), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:00:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2021-05-03 00:00:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-03 00:00:57,024 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:00:57,025 INFO L523 BasicCegarLoop]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:00:57,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-05-03 00:00:57,025 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:00:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:00:57,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1831628965, now seen corresponding path program 77 times [2021-05-03 00:00:57,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:00:57,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988872488] [2021-05-03 00:00:57,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:00:57,037 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3315 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3315} OutVars{main_~x~0=v_main_~x~0_3315} AuxVars[] AssignedVars[] [2021-05-03 00:00:57,039 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:00:57,049 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:57,070 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:00:57,090 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:00:57,123 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:00:57,124 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_3317 1) 4294967296) 100000000) (< (mod v_main_~x~0_3317 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_3317} OutVars{main_~x~0=v_main_~x~0_3317} AuxVars[] AssignedVars[] [2021-05-03 00:00:57,126 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:00:57,127 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:57,128 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:00:57,220 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:00:57,226 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:00:57,280 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:00:57,316 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:00:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:00:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:00:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:00:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:01:06,602 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:01:06,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988872488] [2021-05-03 00:01:06,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [988872488] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:01:06,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:01:06,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2021-05-03 00:01:06,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627812474] [2021-05-03 00:01:06,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-03 00:01:06,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:01:06,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-03 00:01:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=6563, Unknown=0, NotChecked=0, Total=6806 [2021-05-03 00:01:06,604 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 80 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:01:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:01:22,691 INFO L93 Difference]: Finished difference Result 176 states and 180 transitions. [2021-05-03 00:01:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-03 00:01:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 80 states have internal predecessors, (161), 2 states have call successors, (3), 3 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 165 [2021-05-03 00:01:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:01:22,693 INFO L225 Difference]: With dead ends: 176 [2021-05-03 00:01:22,693 INFO L226 Difference]: Without dead ends: 169 [2021-05-03 00:01:22,694 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 6 SyntacticMatches, 79 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3310 ImplicationChecksByTransitivity, 15823.4ms TimeCoverageRelationStatistics Valid=633, Invalid=25127, Unknown=0, NotChecked=0, Total=25760 [2021-05-03 00:01:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-05-03 00:01:22,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-05-03 00:01:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.0121951219512195) internal successors, (166), 164 states have internal predecessors, (166), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:01:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2021-05-03 00:01:22,701 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 165 [2021-05-03 00:01:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:01:22,701 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2021-05-03 00:01:22,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 1.9876543209876543) internal successors, (161), 80 states have internal predecessors, (161), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:01:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2021-05-03 00:01:22,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-03 00:01:22,702 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:01:22,702 INFO L523 BasicCegarLoop]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:01:22,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-05-03 00:01:22,702 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:01:22,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:01:22,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1816488120, now seen corresponding path program 78 times [2021-05-03 00:01:22,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:01:22,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156414703] [2021-05-03 00:01:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:01:22,710 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3397 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3397} OutVars{main_~x~0=v_main_~x~0_3397} AuxVars[] AssignedVars[] [2021-05-03 00:01:22,711 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:01:22,712 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:01:22,728 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:01:22,757 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:01:22,792 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:01:22,794 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_3399 1) 4294967296) 100000000) (< (mod v_main_~x~0_3399 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_3399} OutVars{main_~x~0=v_main_~x~0_3399} AuxVars[] AssignedVars[] [2021-05-03 00:01:22,796 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:01:22,797 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:01:22,799 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:01:22,919 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:01:22,934 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:01:22,985 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:01:23,017 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:01:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:01:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:01:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:01:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:01:32,325 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:01:32,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156414703] [2021-05-03 00:01:32,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1156414703] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:01:32,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:01:32,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-03 00:01:32,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143538078] [2021-05-03 00:01:32,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-03 00:01:32,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:01:32,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-03 00:01:32,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=6726, Unknown=0, NotChecked=0, Total=6972 [2021-05-03 00:01:32,327 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 82 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 81 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:01:48,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:01:48,412 INFO L93 Difference]: Finished difference Result 178 states and 182 transitions. [2021-05-03 00:01:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-03 00:01:48,413 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 81 states have internal predecessors, (163), 2 states have call successors, (3), 3 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 167 [2021-05-03 00:01:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:01:48,414 INFO L225 Difference]: With dead ends: 178 [2021-05-03 00:01:48,414 INFO L226 Difference]: Without dead ends: 171 [2021-05-03 00:01:48,415 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 7 SyntacticMatches, 79 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3392 ImplicationChecksByTransitivity, 15793.5ms TimeCoverageRelationStatistics Valid=641, Invalid=25765, Unknown=0, NotChecked=0, Total=26406 [2021-05-03 00:01:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-03 00:01:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-05-03 00:01:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 166 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:01:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 172 transitions. [2021-05-03 00:01:48,422 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 172 transitions. Word has length 167 [2021-05-03 00:01:48,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:01:48,422 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 172 transitions. [2021-05-03 00:01:48,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 1.9878048780487805) internal successors, (163), 81 states have internal predecessors, (163), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:01:48,423 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 172 transitions. [2021-05-03 00:01:48,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-03 00:01:48,423 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:01:48,423 INFO L523 BasicCegarLoop]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:01:48,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-05-03 00:01:48,423 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:01:48,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:01:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1331274027, now seen corresponding path program 79 times [2021-05-03 00:01:48,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:01:48,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170367026] [2021-05-03 00:01:48,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:01:48,442 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3480 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3480} OutVars{main_~x~0=v_main_~x~0_3480} AuxVars[] AssignedVars[] [2021-05-03 00:01:48,443 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:01:48,444 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:01:48,462 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:01:48,491 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:01:48,527 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:01:48,529 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_3482 1) 4294967296) 100000000) (< (mod v_main_~x~0_3482 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_3482} OutVars{main_~x~0=v_main_~x~0_3482} AuxVars[] AssignedVars[] [2021-05-03 00:01:48,530 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:01:48,550 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:01:48,552 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:01:48,652 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:01:48,661 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:01:48,710 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:01:48,749 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:01:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:01:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:01:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:01:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:01:57,994 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:01:57,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170367026] [2021-05-03 00:01:57,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [170367026] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:01:57,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:01:57,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2021-05-03 00:01:57,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395910809] [2021-05-03 00:01:57,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-03 00:01:57,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:01:57,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-03 00:01:57,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=6891, Unknown=0, NotChecked=0, Total=7140 [2021-05-03 00:01:57,995 INFO L87 Difference]: Start difference. First operand 171 states and 172 transitions. Second operand has 83 states, 83 states have (on average 1.9879518072289157) internal successors, (165), 82 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:02:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:02:15,187 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2021-05-03 00:02:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-03 00:02:15,189 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.9879518072289157) internal successors, (165), 82 states have internal predecessors, (165), 2 states have call successors, (3), 3 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 169 [2021-05-03 00:02:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:02:15,189 INFO L225 Difference]: With dead ends: 180 [2021-05-03 00:02:15,189 INFO L226 Difference]: Without dead ends: 173 [2021-05-03 00:02:15,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 7 SyntacticMatches, 80 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 16196.5ms TimeCoverageRelationStatistics Valid=649, Invalid=26411, Unknown=0, NotChecked=0, Total=27060 [2021-05-03 00:02:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-05-03 00:02:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-05-03 00:02:15,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:02:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2021-05-03 00:02:15,198 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 169 [2021-05-03 00:02:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:02:15,198 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2021-05-03 00:02:15,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 1.9879518072289157) internal successors, (165), 82 states have internal predecessors, (165), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:02:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2021-05-03 00:02:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-03 00:02:15,199 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:02:15,199 INFO L523 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:02:15,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-05-03 00:02:15,199 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:02:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:02:15,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1621246386, now seen corresponding path program 80 times [2021-05-03 00:02:15,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:02:15,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044437643] [2021-05-03 00:02:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:02:15,206 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3564 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3564} OutVars{main_~x~0=v_main_~x~0_3564} AuxVars[] AssignedVars[] [2021-05-03 00:02:15,211 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:02:15,225 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:02:15,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:02:15,268 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:02:15,303 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:02:15,305 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_3566 1) 4294967296) 100000000) (< (mod v_main_~x~0_3566 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_3566} OutVars{main_~x~0=v_main_~x~0_3566} AuxVars[] AssignedVars[] [2021-05-03 00:02:15,306 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:02:15,328 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:02:15,330 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:02:15,451 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:02:15,458 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:02:15,494 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:02:15,531 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:02:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:02:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:02:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:02:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:02:25,561 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:02:25,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044437643] [2021-05-03 00:02:25,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2044437643] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:02:25,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:02:25,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-03 00:02:25,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638772197] [2021-05-03 00:02:25,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-03 00:02:25,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:02:25,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-03 00:02:25,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=7058, Unknown=0, NotChecked=0, Total=7310 [2021-05-03 00:02:25,563 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:02:42,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:02:42,707 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2021-05-03 00:02:42,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-03 00:02:42,708 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (3), 3 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 171 [2021-05-03 00:02:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:02:42,708 INFO L225 Difference]: With dead ends: 182 [2021-05-03 00:02:42,708 INFO L226 Difference]: Without dead ends: 175 [2021-05-03 00:02:42,709 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 6 SyntacticMatches, 82 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3559 ImplicationChecksByTransitivity, 16858.1ms TimeCoverageRelationStatistics Valid=657, Invalid=27065, Unknown=0, NotChecked=0, Total=27722 [2021-05-03 00:02:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-05-03 00:02:42,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-05-03 00:02:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.011764705882353) internal successors, (172), 170 states have internal predecessors, (172), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:02:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2021-05-03 00:02:42,717 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 171 [2021-05-03 00:02:42,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:02:42,717 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2021-05-03 00:02:42,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 1.9880952380952381) internal successors, (167), 83 states have internal predecessors, (167), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:02:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2021-05-03 00:02:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-03 00:02:42,717 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:02:42,717 INFO L523 BasicCegarLoop]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:02:42,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-05-03 00:02:42,718 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:02:42,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:02:42,718 INFO L82 PathProgramCache]: Analyzing trace with hash 19980623, now seen corresponding path program 81 times [2021-05-03 00:02:42,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:02:42,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745694628] [2021-05-03 00:02:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:02:42,724 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3649 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3649} OutVars{main_~x~0=v_main_~x~0_3649} AuxVars[] AssignedVars[] [2021-05-03 00:02:42,726 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:02:42,738 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:02:42,760 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:02:42,784 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:02:42,830 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:02:42,831 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_3651 4294967296) 10000000) (< (mod (+ v_main_~x~0_3651 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_3651} OutVars{main_~x~0=v_main_~x~0_3651} AuxVars[] AssignedVars[] [2021-05-03 00:02:42,833 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:02:42,834 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:02:42,837 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:02:43,234 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 1 [2021-05-03 00:02:43,273 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:02:43,284 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:02:43,333 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:02:43,367 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:02:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:02:43,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:02:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:02:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:02:53,453 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:02:53,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745694628] [2021-05-03 00:02:53,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1745694628] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:02:53,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:02:53,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2021-05-03 00:02:53,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996937929] [2021-05-03 00:02:53,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-03 00:02:53,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:02:53,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-03 00:02:53,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=7227, Unknown=0, NotChecked=0, Total=7482 [2021-05-03 00:02:53,455 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 85 states, 85 states have (on average 1.988235294117647) internal successors, (169), 84 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:03:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:03:11,149 INFO L93 Difference]: Finished difference Result 184 states and 188 transitions. [2021-05-03 00:03:11,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-03 00:03:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.988235294117647) internal successors, (169), 84 states have internal predecessors, (169), 2 states have call successors, (3), 3 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 173 [2021-05-03 00:03:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:03:11,151 INFO L225 Difference]: With dead ends: 184 [2021-05-03 00:03:11,151 INFO L226 Difference]: Without dead ends: 177 [2021-05-03 00:03:11,152 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 7 SyntacticMatches, 82 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3644 ImplicationChecksByTransitivity, 17155.9ms TimeCoverageRelationStatistics Valid=665, Invalid=27727, Unknown=0, NotChecked=0, Total=28392 [2021-05-03 00:03:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-03 00:03:11,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-05-03 00:03:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:03:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2021-05-03 00:03:11,159 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 173 [2021-05-03 00:03:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:03:11,159 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2021-05-03 00:03:11,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 1.988235294117647) internal successors, (169), 84 states have internal predecessors, (169), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:03:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2021-05-03 00:03:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-03 00:03:11,160 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:03:11,160 INFO L523 BasicCegarLoop]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:03:11,160 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-05-03 00:03:11,160 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:03:11,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:03:11,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1198125652, now seen corresponding path program 82 times [2021-05-03 00:03:11,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:03:11,161 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111611209] [2021-05-03 00:03:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:03:11,170 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3735 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3735} OutVars{main_~x~0=v_main_~x~0_3735} AuxVars[] AssignedVars[] [2021-05-03 00:03:11,171 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:03:11,184 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:03:11,204 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:03:11,227 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:03:11,265 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:03:11,266 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod v_main_~x~0_3737 4294967296) 10000000) (< (mod (+ v_main_~x~0_3737 1) 4294967296) 100000000)) InVars {main_~x~0=v_main_~x~0_3737} OutVars{main_~x~0=v_main_~x~0_3737} AuxVars[] AssignedVars[] [2021-05-03 00:03:11,268 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:03:11,285 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:03:11,286 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:03:11,349 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:03:11,356 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:03:11,469 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-05-03 00:03:11,682 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 1 [2021-05-03 00:03:11,684 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:03:11,718 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:03:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:03:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:03:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:03:11,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:03:22,285 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:03:22,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111611209] [2021-05-03 00:03:22,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1111611209] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:03:22,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:03:22,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [86] imperfect sequences [] total 86 [2021-05-03 00:03:22,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227051990] [2021-05-03 00:03:22,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-03 00:03:22,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:03:22,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-03 00:03:22,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=7398, Unknown=0, NotChecked=0, Total=7656 [2021-05-03 00:03:22,286 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 86 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 85 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:03:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:03:42,968 INFO L93 Difference]: Finished difference Result 186 states and 190 transitions. [2021-05-03 00:03:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-03 00:03:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 85 states have internal predecessors, (171), 2 states have call successors, (3), 3 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 175 [2021-05-03 00:03:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:03:42,970 INFO L225 Difference]: With dead ends: 186 [2021-05-03 00:03:42,970 INFO L226 Difference]: Without dead ends: 179 [2021-05-03 00:03:42,971 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 7 SyntacticMatches, 83 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3730 ImplicationChecksByTransitivity, 18663.4ms TimeCoverageRelationStatistics Valid=673, Invalid=28397, Unknown=0, NotChecked=0, Total=29070 [2021-05-03 00:03:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-05-03 00:03:42,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-05-03 00:03:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 174 states have internal predecessors, (176), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:03:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 180 transitions. [2021-05-03 00:03:42,983 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 180 transitions. Word has length 175 [2021-05-03 00:03:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:03:42,983 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 180 transitions. [2021-05-03 00:03:42,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 1.9883720930232558) internal successors, (171), 85 states have internal predecessors, (171), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:03:42,983 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 180 transitions. [2021-05-03 00:03:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-03 00:03:42,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:03:42,984 INFO L523 BasicCegarLoop]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:03:42,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-05-03 00:03:42,984 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:03:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:03:42,984 INFO L82 PathProgramCache]: Analyzing trace with hash 727815881, now seen corresponding path program 83 times [2021-05-03 00:03:42,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:03:42,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40731034] [2021-05-03 00:03:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:03:42,991 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3822 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3822} OutVars{main_~x~0=v_main_~x~0_3822} AuxVars[] AssignedVars[] [2021-05-03 00:03:42,993 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:03:42,994 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:03:43,026 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:03:43,063 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:03:43,098 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:03:43,099 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_3824 1) 4294967296) 100000000) (< (mod v_main_~x~0_3824 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_3824} OutVars{main_~x~0=v_main_~x~0_3824} AuxVars[] AssignedVars[] [2021-05-03 00:03:43,101 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:03:43,122 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:03:43,123 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:03:43,231 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:03:43,238 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:03:43,278 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:03:43,315 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:03:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:03:43,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:03:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:03:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:03:55,418 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:03:55,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40731034] [2021-05-03 00:03:55,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [40731034] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:03:55,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:03:55,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2021-05-03 00:03:55,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252367835] [2021-05-03 00:03:55,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-03 00:03:55,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:03:55,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-03 00:03:55,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=7571, Unknown=0, NotChecked=0, Total=7832 [2021-05-03 00:03:55,420 INFO L87 Difference]: Start difference. First operand 179 states and 180 transitions. Second operand has 87 states, 87 states have (on average 1.9885057471264367) internal successors, (173), 86 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:04:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:04:16,663 INFO L93 Difference]: Finished difference Result 188 states and 192 transitions. [2021-05-03 00:04:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-03 00:04:16,664 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 1.9885057471264367) internal successors, (173), 86 states have internal predecessors, (173), 2 states have call successors, (3), 3 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 177 [2021-05-03 00:04:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:04:16,665 INFO L225 Difference]: With dead ends: 188 [2021-05-03 00:04:16,665 INFO L226 Difference]: Without dead ends: 181 [2021-05-03 00:04:16,666 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 6 SyntacticMatches, 85 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 20394.0ms TimeCoverageRelationStatistics Valid=681, Invalid=29075, Unknown=0, NotChecked=0, Total=29756 [2021-05-03 00:04:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-05-03 00:04:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-05-03 00:04:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 176 states have (on average 1.0113636363636365) internal successors, (178), 176 states have internal predecessors, (178), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:04:16,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2021-05-03 00:04:16,673 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 177 [2021-05-03 00:04:16,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:04:16,673 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2021-05-03 00:04:16,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 1.9885057471264367) internal successors, (173), 86 states have internal predecessors, (173), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-03 00:04:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2021-05-03 00:04:16,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-03 00:04:16,674 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:04:16,674 INFO L523 BasicCegarLoop]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:04:16,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-05-03 00:04:16,674 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:04:16,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:04:16,674 INFO L82 PathProgramCache]: Analyzing trace with hash 426724518, now seen corresponding path program 84 times [2021-05-03 00:04:16,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:04:16,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846532906] [2021-05-03 00:04:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:04:16,682 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~x~0_3910 4294967296) 10000000) InVars {main_~x~0=v_main_~x~0_3910} OutVars{main_~x~0=v_main_~x~0_3910} AuxVars[] AssignedVars[] [2021-05-03 00:04:16,684 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size [2021-05-03 00:04:16,697 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:04:16,724 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-03 00:04:16,752 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.2 percent of original size 55 [2021-05-03 00:04:16,798 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:04:16,799 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< (mod (+ v_main_~x~0_3912 1) 4294967296) 100000000) (< (mod v_main_~x~0_3912 4294967296) 10000000)) InVars {main_~x~0=v_main_~x~0_3912} OutVars{main_~x~0=v_main_~x~0_3912} AuxVars[] AssignedVars[] [2021-05-03 00:04:16,801 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size [2021-05-03 00:04:16,802 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:04:16,804 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:04:16,860 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-03 00:04:16,871 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-03 00:04:16,954 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.6 percent of original size 88 [2021-05-03 00:04:16,999 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:04:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:04:17,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:04:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:04:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:04:28,573 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:04:28,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846532906] [2021-05-03 00:04:28,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1846532906] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:04:28,573 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:04:28,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [88] imperfect sequences [] total 88 [2021-05-03 00:04:28,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630806572] [2021-05-03 00:04:28,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-03 00:04:28,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:04:28,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-03 00:04:28,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=7746, Unknown=0, NotChecked=0, Total=8010 [2021-05-03 00:04:28,574 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 88 states, 88 states have (on average 1.9886363636363635) internal successors, (175), 87 states have internal predecessors, (175), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)