/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:30:51,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:30:51,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:30:51,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:30:51,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:30:51,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:30:51,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:30:51,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:30:51,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:30:51,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:30:51,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:30:51,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:30:51,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:30:51,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:30:51,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:30:51,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:30:51,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:30:51,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:30:51,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:30:51,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:30:51,260 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:30:51,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:30:51,260 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:30:51,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:30:51,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:30:51,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:30:51,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:30:51,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:30:51,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:30:51,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:30:51,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:30:51,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:30:51,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:30:51,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:30:51,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:30:51,265 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:30:51,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:30:51,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:30:51,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:30:51,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:30:51,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:30:51,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:30:51,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:30:51,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:30:51,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:30:51,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:30:51,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:30:51,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:30:51,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:30:51,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:30:51,697 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:30:51,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-10-23 18:30:51,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9268cc024/20eaa0af3f324615a0e0c94c49ce24ee/FLAG614eda044 [2020-10-23 18:30:52,506 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:30:52,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-10-23 18:30:52,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9268cc024/20eaa0af3f324615a0e0c94c49ce24ee/FLAG614eda044 [2020-10-23 18:30:52,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9268cc024/20eaa0af3f324615a0e0c94c49ce24ee [2020-10-23 18:30:52,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:30:52,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:30:52,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:30:52,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:30:52,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:30:52,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:30:52" (1/1) ... [2020-10-23 18:30:52,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7411b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:52, skipping insertion in model container [2020-10-23 18:30:52,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:30:52" (1/1) ... [2020-10-23 18:30:52,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:30:52,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:30:53,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:30:53,365 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:30:53,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:30:53,570 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:30:53,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53 WrapperNode [2020-10-23 18:30:53,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:30:53,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:30:53,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:30:53,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:30:53,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (1/1) ... [2020-10-23 18:30:53,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (1/1) ... [2020-10-23 18:30:53,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (1/1) ... [2020-10-23 18:30:53,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (1/1) ... [2020-10-23 18:30:53,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (1/1) ... [2020-10-23 18:30:53,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (1/1) ... [2020-10-23 18:30:53,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (1/1) ... [2020-10-23 18:30:53,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:30:53,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:30:53,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:30:53,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:30:53,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (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 [2020-10-23 18:30:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:30:53,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:30:53,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:30:53,816 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-23 18:30:53,816 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:30:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-23 18:30:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:30:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:30:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:30:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:30:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:30:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 18:30:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:30:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:30:53,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:30:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:30:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:30:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:30:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:30:55,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:30:55,045 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:30:55,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:30:55 BoogieIcfgContainer [2020-10-23 18:30:55,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:30:55,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:30:55,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:30:55,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:30:55,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:30:52" (1/3) ... [2020-10-23 18:30:55,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490e2fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:30:55, skipping insertion in model container [2020-10-23 18:30:55,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:30:53" (2/3) ... [2020-10-23 18:30:55,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490e2fa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:30:55, skipping insertion in model container [2020-10-23 18:30:55,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:30:55" (3/3) ... [2020-10-23 18:30:55,064 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-10-23 18:30:55,076 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:30:55,082 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:30:55,096 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:30:55,128 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:30:55,128 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:30:55,128 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:30:55,128 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:30:55,128 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:30:55,129 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:30:55,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:30:55,129 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:30:55,151 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states. [2020-10-23 18:30:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-23 18:30:55,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:30:55,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:30:55,164 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:30:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:30:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash -386144477, now seen corresponding path program 1 times [2020-10-23 18:30:55,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:30:55,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427433299] [2020-10-23 18:30:55,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:30:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:30:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:30:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:30:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:30:55,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427433299] [2020-10-23 18:30:55,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:30:55,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:30:55,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509804] [2020-10-23 18:30:55,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:30:55,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:30:55,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:30:55,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:30:55,970 INFO L87 Difference]: Start difference. First operand 211 states. Second operand 5 states. [2020-10-23 18:30:57,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:30:57,823 INFO L93 Difference]: Finished difference Result 562 states and 962 transitions. [2020-10-23 18:30:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:30:57,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-23 18:30:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:30:57,841 INFO L225 Difference]: With dead ends: 562 [2020-10-23 18:30:57,841 INFO L226 Difference]: Without dead ends: 287 [2020-10-23 18:30:57,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:30:57,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-23 18:30:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 281. [2020-10-23 18:30:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-23 18:30:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 409 transitions. [2020-10-23 18:30:57,940 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 409 transitions. Word has length 99 [2020-10-23 18:30:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:30:57,941 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 409 transitions. [2020-10-23 18:30:57,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:30:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 409 transitions. [2020-10-23 18:30:57,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-23 18:30:57,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:30:57,952 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:30:57,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:30:57,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:30:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:30:57,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1138815710, now seen corresponding path program 1 times [2020-10-23 18:30:57,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:30:57,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979700298] [2020-10-23 18:30:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:30:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:30:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:30:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:30:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:30:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:30:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:30:58,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979700298] [2020-10-23 18:30:58,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:30:58,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:30:58,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082045940] [2020-10-23 18:30:58,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:30:58,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:30:58,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:30:58,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:30:58,263 INFO L87 Difference]: Start difference. First operand 281 states and 409 transitions. Second operand 7 states. [2020-10-23 18:31:00,093 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-23 18:31:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:31:00,256 INFO L93 Difference]: Finished difference Result 856 states and 1274 transitions. [2020-10-23 18:31:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:31:00,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-23 18:31:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:31:00,269 INFO L225 Difference]: With dead ends: 856 [2020-10-23 18:31:00,270 INFO L226 Difference]: Without dead ends: 581 [2020-10-23 18:31:00,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-23 18:31:00,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-23 18:31:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 559. [2020-10-23 18:31:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-23 18:31:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 784 transitions. [2020-10-23 18:31:00,329 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 784 transitions. Word has length 108 [2020-10-23 18:31:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:31:00,329 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 784 transitions. [2020-10-23 18:31:00,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:31:00,329 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 784 transitions. [2020-10-23 18:31:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-23 18:31:00,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:31:00,334 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:31:00,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:31:00,335 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:31:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:31:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash -272510509, now seen corresponding path program 1 times [2020-10-23 18:31:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:31:00,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942506699] [2020-10-23 18:31:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:31:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:00,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:31:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:00,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:31:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:00,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:31:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-23 18:31:00,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942506699] [2020-10-23 18:31:00,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945677166] [2020-10-23 18:31:00,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:00,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:31:00,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:31:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:31:01,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:31:01,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-10-23 18:31:01,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995296862] [2020-10-23 18:31:01,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:31:01,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:31:01,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:31:01,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:31:01,075 INFO L87 Difference]: Start difference. First operand 559 states and 784 transitions. Second operand 10 states. [2020-10-23 18:31:01,282 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-23 18:31:01,633 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-10-23 18:31:01,831 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-23 18:31:04,048 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-10-23 18:31:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:31:06,459 INFO L93 Difference]: Finished difference Result 2735 states and 4130 transitions. [2020-10-23 18:31:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 18:31:06,460 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 129 [2020-10-23 18:31:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:31:06,489 INFO L225 Difference]: With dead ends: 2735 [2020-10-23 18:31:06,490 INFO L226 Difference]: Without dead ends: 2182 [2020-10-23 18:31:06,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2020-10-23 18:31:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2020-10-23 18:31:06,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 1709. [2020-10-23 18:31:06,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-10-23 18:31:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2302 transitions. [2020-10-23 18:31:06,638 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2302 transitions. Word has length 129 [2020-10-23 18:31:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:31:06,639 INFO L481 AbstractCegarLoop]: Abstraction has 1709 states and 2302 transitions. [2020-10-23 18:31:06,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:31:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2302 transitions. [2020-10-23 18:31:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-23 18:31:06,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:31:06,649 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:31:06,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:31:06,863 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:31:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:31:06,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1780321561, now seen corresponding path program 1 times [2020-10-23 18:31:06,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:31:06,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920168538] [2020-10-23 18:31:06,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:31:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:07,092 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-23 18:31:07,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:31:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:07,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:31:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:07,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 18:31:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-23 18:31:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:07,273 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 18:31:07,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920168538] [2020-10-23 18:31:07,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725093340] [2020-10-23 18:31:07,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:07,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:31:07,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:31:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-23 18:31:07,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:31:07,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-10-23 18:31:07,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816252524] [2020-10-23 18:31:07,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:31:07,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:31:07,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:31:07,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:31:07,683 INFO L87 Difference]: Start difference. First operand 1709 states and 2302 transitions. Second operand 10 states. [2020-10-23 18:31:08,137 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-23 18:31:08,596 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-10-23 18:31:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:31:13,140 INFO L93 Difference]: Finished difference Result 5587 states and 7920 transitions. [2020-10-23 18:31:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-23 18:31:13,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-10-23 18:31:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:31:13,165 INFO L225 Difference]: With dead ends: 5587 [2020-10-23 18:31:13,166 INFO L226 Difference]: Without dead ends: 3272 [2020-10-23 18:31:13,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2020-10-23 18:31:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-10-23 18:31:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3204. [2020-10-23 18:31:13,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3204 states. [2020-10-23 18:31:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 3752 transitions. [2020-10-23 18:31:13,337 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 3752 transitions. Word has length 149 [2020-10-23 18:31:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:31:13,338 INFO L481 AbstractCegarLoop]: Abstraction has 3204 states and 3752 transitions. [2020-10-23 18:31:13,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:31:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 3752 transitions. [2020-10-23 18:31:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-23 18:31:13,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:31:13,348 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:31:13,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:13,562 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:31:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:31:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash 812810833, now seen corresponding path program 1 times [2020-10-23 18:31:13,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:31:13,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505221336] [2020-10-23 18:31:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:31:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:13,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:31:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:31:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:13,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:31:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-23 18:31:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 20 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-23 18:31:13,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505221336] [2020-10-23 18:31:13,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151868463] [2020-10-23 18:31:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:14,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:31:14,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:31:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-23 18:31:14,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-23 18:31:14,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2020-10-23 18:31:14,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289006691] [2020-10-23 18:31:14,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:31:14,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:31:14,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:31:14,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:31:14,128 INFO L87 Difference]: Start difference. First operand 3204 states and 3752 transitions. Second operand 3 states. [2020-10-23 18:31:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:31:14,899 INFO L93 Difference]: Finished difference Result 8582 states and 10255 transitions. [2020-10-23 18:31:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:31:14,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-10-23 18:31:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:31:14,932 INFO L225 Difference]: With dead ends: 8582 [2020-10-23 18:31:14,933 INFO L226 Difference]: Without dead ends: 5519 [2020-10-23 18:31:14,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 18:31:14,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-10-23 18:31:15,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4977. [2020-10-23 18:31:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4977 states. [2020-10-23 18:31:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4977 states to 4977 states and 5851 transitions. [2020-10-23 18:31:15,177 INFO L78 Accepts]: Start accepts. Automaton has 4977 states and 5851 transitions. Word has length 153 [2020-10-23 18:31:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:31:15,178 INFO L481 AbstractCegarLoop]: Abstraction has 4977 states and 5851 transitions. [2020-10-23 18:31:15,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:31:15,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4977 states and 5851 transitions. [2020-10-23 18:31:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-23 18:31:15,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:31:15,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:31:15,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:15,407 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:31:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:31:15,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1568571443, now seen corresponding path program 1 times [2020-10-23 18:31:15,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:31:15,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253631380] [2020-10-23 18:31:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:31:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:15,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:31:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:15,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:31:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 18:31:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 18:31:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:31:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-23 18:31:15,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253631380] [2020-10-23 18:31:15,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660012787] [2020-10-23 18:31:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:15,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-23 18:31:15,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:31:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-23 18:31:16,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:31:16,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-10-23 18:31:16,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960927014] [2020-10-23 18:31:16,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:31:16,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:31:16,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:31:16,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:31:16,037 INFO L87 Difference]: Start difference. First operand 4977 states and 5851 transitions. Second operand 10 states. [2020-10-23 18:31:18,019 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-23 18:31:18,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:31:18,926 INFO L93 Difference]: Finished difference Result 10274 states and 12195 transitions. [2020-10-23 18:31:18,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 18:31:18,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 183 [2020-10-23 18:31:18,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:31:18,957 INFO L225 Difference]: With dead ends: 10274 [2020-10-23 18:31:18,957 INFO L226 Difference]: Without dead ends: 5301 [2020-10-23 18:31:18,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-10-23 18:31:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2020-10-23 18:31:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5279. [2020-10-23 18:31:19,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5279 states. [2020-10-23 18:31:19,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5279 states to 5279 states and 6094 transitions. [2020-10-23 18:31:19,220 INFO L78 Accepts]: Start accepts. Automaton has 5279 states and 6094 transitions. Word has length 183 [2020-10-23 18:31:19,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:31:19,220 INFO L481 AbstractCegarLoop]: Abstraction has 5279 states and 6094 transitions. [2020-10-23 18:31:19,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:31:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5279 states and 6094 transitions. [2020-10-23 18:31:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-23 18:31:19,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:31:19,241 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:31:19,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:19,455 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:31:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:31:19,456 INFO L82 PathProgramCache]: Analyzing trace with hash -789658215, now seen corresponding path program 1 times [2020-10-23 18:31:19,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:31:19,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300156341] [2020-10-23 18:31:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:31:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:31:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:31:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 18:31:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-23 18:31:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 18:31:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-23 18:31:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 139 proven. 38 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-10-23 18:31:19,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300156341] [2020-10-23 18:31:19,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385028455] [2020-10-23 18:31:19,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:31:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:31:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:31:20,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:31:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 243 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-23 18:31:20,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:31:20,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2020-10-23 18:31:20,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951646661] [2020-10-23 18:31:20,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 18:31:20,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:31:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 18:31:20,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:31:20,176 INFO L87 Difference]: Start difference. First operand 5279 states and 6094 transitions. Second operand 11 states. [2020-10-23 18:31:20,331 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-23 18:31:21,272 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-23 18:31:21,790 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-23 18:31:22,483 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-23 18:31:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:31:24,433 INFO L93 Difference]: Finished difference Result 10845 states and 12650 transitions. [2020-10-23 18:31:24,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 18:31:24,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 229 [2020-10-23 18:31:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:31:24,435 INFO L225 Difference]: With dead ends: 10845 [2020-10-23 18:31:24,435 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:31:24,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2020-10-23 18:31:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:31:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:31:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:31:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:31:24,457 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 229 [2020-10-23 18:31:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:31:24,460 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:31:24,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 18:31:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:31:24,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:31:24,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-23 18:31:24,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:31:25,790 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 51 [2020-10-23 18:31:26,024 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 51 [2020-10-23 18:31:26,243 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 35 [2020-10-23 18:31:27,897 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 212 DAG size of output: 54 [2020-10-23 18:31:28,107 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-23 18:31:28,406 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-23 18:31:28,730 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-10-23 18:31:28,734 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-23 18:31:28,734 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 18:31:28,735 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-23 18:31:28,735 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-23 18:31:28,735 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:31:28,735 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= ~a21~0 |old(~a21~0)|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~a8~0 |old(~a8~0)|) (= ~f~0 |old(~f~0)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~a7~0 |old(~a7~0)|) (= ~w~0 |old(~w~0)|) (= ~u~0 |old(~u~0)|) (= ~e~0 |old(~e~0)|) (= ~a16~0 |old(~a16~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~y~0 |old(~y~0)|) (= |#t~string7.base| |old(#t~string7.base)|) (= ~a17~0 |old(~a17~0)|) (= ~c~0 |old(~c~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= ~z~0 |old(~z~0)|) (= ~a12~0 |old(~a12~0)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= ~a~0 |old(~a~0)|) (= ~a20~0 |old(~a20~0)|) (= ~x~0 |old(~x~0)|) (= ~d~0 |old(~d~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~v~0 |old(~v~0)|) (= ~b~0 |old(~b~0)|)) [2020-10-23 18:31:28,735 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L564-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L531-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L498-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L465-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L432-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L399-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L267(lines 267 392) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-10-23 18:31:28,736 INFO L274 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L400(line 400) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L367(lines 367 392) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L301(lines 301 392) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L37(lines 37 392) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L335(lines 335 392) no Hoare annotation was computed. [2020-10-23 18:31:28,737 INFO L274 CegarLoopResult]: For program point L104(lines 104 392) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L567-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L534-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L501-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L468-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L435-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L402-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L270(lines 270 392) no Hoare annotation was computed. [2020-10-23 18:31:28,738 INFO L274 CegarLoopResult]: For program point L138(lines 138 392) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L403(line 403) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L205(lines 205 392) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L74(lines 74 392) no Hoare annotation was computed. [2020-10-23 18:31:28,739 INFO L274 CegarLoopResult]: For program point L570-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L537-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L504-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L471-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L438-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L405-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L339(lines 339 392) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L240(lines 240 392) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-10-23 18:31:28,740 INFO L274 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L406(line 406) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L175(lines 175 392) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L142(lines 142 392) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L374(lines 374 392) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L308(lines 308 392) no Hoare annotation was computed. [2020-10-23 18:31:28,741 INFO L274 CegarLoopResult]: For program point L275(lines 275 392) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L110(lines 110 392) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L540-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L507-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L474-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L441-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L408-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L210(lines 210 392) no Hoare annotation was computed. [2020-10-23 18:31:28,742 INFO L274 CegarLoopResult]: For program point L45(lines 45 392) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L409(line 409) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L146(lines 146 392) no Hoare annotation was computed. [2020-10-23 18:31:28,743 INFO L274 CegarLoopResult]: For program point L543-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L510-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L477-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L444-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L411-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L180(lines 180 392) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-10-23 18:31:28,744 INFO L274 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L412(line 412) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L379(lines 379 392) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L280(lines 280 392) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L247(lines 247 392) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L82(lines 82 392) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L347(lines 347 392) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L314(lines 314 392) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L116(lines 116 392) no Hoare annotation was computed. [2020-10-23 18:31:28,745 INFO L274 CegarLoopResult]: For program point L546-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point L513-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point L480-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point L447-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point L414-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point L216(lines 216 392) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point L150(lines 150 392) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point L51(lines 51 392) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point calculate_outputFINAL(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,746 INFO L274 CegarLoopResult]: For program point calculate_outputEXIT(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L86(lines 86 392) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L549-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L516-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L483-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,747 INFO L274 CegarLoopResult]: For program point L450-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L384(lines 384 392) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L417-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L318(lines 318 392) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L252(lines 252 392) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-10-23 18:31:28,748 INFO L274 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L220(lines 220 392) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L154(lines 154 392) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L121(lines 121 392) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L320(lines 320 392) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L188(lines 188 392) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L56(lines 56 392) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L552-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L519-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,749 INFO L274 CegarLoopResult]: For program point L486-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,750 INFO L274 CegarLoopResult]: For program point L453-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,750 INFO L274 CegarLoopResult]: For program point L420-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,750 INFO L274 CegarLoopResult]: For program point L288(lines 288 392) no Hoare annotation was computed. [2020-10-23 18:31:28,750 INFO L274 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-10-23 18:31:28,750 INFO L274 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-10-23 18:31:28,750 INFO L274 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-10-23 18:31:28,750 INFO L270 CegarLoopResult]: At program point L454(line 454) the Hoare annotation is: (let ((.cse2 (not (<= |old(~a16~0)| 4))) (.cse4 (not (<= |old(~a16~0)| 5))) (.cse3 (not (= |old(~a21~0)| 1))) (.cse0 (not (= |old(~a7~0)| 1))) (.cse1 (not (<= |old(~a8~0)| 13))) (.cse5 (not (= |old(~a20~0)| 1))) (.cse6 (not (<= |old(~a17~0)| 0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 .cse2 .cse3) (or (not (= |old(~a17~0)| 1)) .cse4 .cse0 .cse1 .cse5) (or .cse3 (not (= |old(~a7~0)| 0))) (or .cse4 .cse0 .cse6 .cse3) (or .cse0 .cse1 .cse5 .cse6))) [2020-10-23 18:31:28,751 INFO L274 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-10-23 18:31:28,751 INFO L274 CegarLoopResult]: For program point L454-1(line 454) no Hoare annotation was computed. [2020-10-23 18:31:28,751 INFO L274 CegarLoopResult]: For program point L355(lines 355 392) no Hoare annotation was computed. [2020-10-23 18:31:28,751 INFO L274 CegarLoopResult]: For program point L191(lines 191 392) no Hoare annotation was computed. [2020-10-23 18:31:28,751 INFO L274 CegarLoopResult]: For program point L555-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,751 INFO L274 CegarLoopResult]: For program point L522-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,751 INFO L270 CegarLoopResult]: At program point calculate_outputENTRY(lines 32 577) the Hoare annotation is: (let ((.cse14 (= ~a7~0 |old(~a7~0)|)) (.cse9 (= ~a17~0 |old(~a17~0)|)) (.cse10 (= ~a21~0 1)) (.cse11 (= ~a20~0 |old(~a20~0)|)) (.cse12 (= ~a16~0 |old(~a16~0)|)) (.cse13 (= ~a8~0 |old(~a8~0)|))) (let ((.cse0 (not (<= |old(~a16~0)| 5))) (.cse3 (not (= |old(~a20~0)| 1))) (.cse5 (not (<= |old(~a17~0)| 0))) (.cse6 (and .cse14 .cse9 .cse10 .cse11 .cse12 .cse13)) (.cse7 (not (= |old(~a21~0)| 1))) (.cse1 (not (= |old(~a7~0)| 1))) (.cse2 (not (<= |old(~a8~0)| 13))) (.cse8 (not (<= |old(~a16~0)| 4))) (.cse4 (and .cse14 .cse9 (= ~a21~0 |old(~a21~0)|) .cse11 .cse12 .cse13))) (and (or (not (= |old(~a17~0)| 1)) .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse5 .cse6 .cse7) (or .cse1 .cse2 .cse3 .cse5 .cse4) (or .cse2 .cse8 .cse6 .cse7) (or (and .cse9 .cse10 .cse11 .cse12 .cse13 (= ~a7~0 0)) .cse7 (not (= |old(~a7~0)| 0))) (or .cse1 .cse2 .cse8 .cse4)))) [2020-10-23 18:31:28,751 INFO L274 CegarLoopResult]: For program point L489-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L456-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L423-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L357(lines 357 392) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L258(lines 258 392) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L225(lines 225 392) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L126(lines 126 392) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-10-23 18:31:28,752 INFO L274 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L94(lines 94 392) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L326(lines 326 392) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L558-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L525-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L492-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L459-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L393(lines 393 395) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L426-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,753 INFO L274 CegarLoopResult]: For program point L393-2(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L294(lines 294 392) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L162(lines 162 392) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L394(line 394) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L196(lines 196 392) no Hoare annotation was computed. [2020-10-23 18:31:28,754 INFO L274 CegarLoopResult]: For program point L64(lines 64 392) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L263(lines 263 392) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L131(lines 131 392) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L561-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L528-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L495-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L462-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L429-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L363(lines 363 392) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L396-1(lines 32 577) no Hoare annotation was computed. [2020-10-23 18:31:28,755 INFO L274 CegarLoopResult]: For program point L99(lines 99 392) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L33(lines 33 392) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L397(line 397) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L331(lines 331 392) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L199(lines 199 392) no Hoare annotation was computed. [2020-10-23 18:31:28,756 INFO L274 CegarLoopResult]: For program point L67(lines 67 392) no Hoare annotation was computed. [2020-10-23 18:31:28,757 INFO L274 CegarLoopResult]: For program point L365(lines 365 392) no Hoare annotation was computed. [2020-10-23 18:31:28,757 INFO L274 CegarLoopResult]: For program point L233(lines 233 392) no Hoare annotation was computed. [2020-10-23 18:31:28,757 INFO L274 CegarLoopResult]: For program point L167(lines 167 392) no Hoare annotation was computed. [2020-10-23 18:31:28,757 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:31:28,757 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~a21~0 1) (<= ~a16~0 5) (= ~a20~0 1) (<= 5 ~a16~0) (= ~a7~0 0) (= ~a17~0 1)) [2020-10-23 18:31:28,757 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:31:28,757 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:31:28,757 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 579 596) the Hoare annotation is: (or (not (= |old(~a17~0)| 1)) (not (<= 5 |old(~a16~0)|)) (and (= ~a17~0 |old(~a17~0)|) (= ~a21~0 1) (= ~a20~0 |old(~a20~0)|) (= ~a16~0 |old(~a16~0)|) (= ~a8~0 |old(~a8~0)|) (= ~a7~0 0)) (not (<= |old(~a16~0)| 5)) (not (= |old(~a20~0)| 1)) (not (= |old(~a21~0)| 1)) (not (= |old(~a7~0)| 0))) [2020-10-23 18:31:28,758 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 579 596) no Hoare annotation was computed. [2020-10-23 18:31:28,758 INFO L270 CegarLoopResult]: At program point L593(line 593) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 4)) (.cse1 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (not (<= 5 |old(~a16~0)|)) (not (= |old(~a17~0)| 1)) (and .cse0 .cse4 .cse5) (not (<= |old(~a16~0)| 5)) (and .cse1 .cse3 .cse6 .cse5) (and .cse1 .cse4 .cse5) (and .cse1 .cse2 .cse6 (= ~a17~0 1) .cse5) (not (= |old(~a20~0)| 1)) (and .cse0 (= ~a7~0 0)) (not (= |old(~a21~0)| 1)) (not (= |old(~a7~0)| 0)))) [2020-10-23 18:31:28,758 INFO L274 CegarLoopResult]: For program point L593-1(line 593) no Hoare annotation was computed. [2020-10-23 18:31:28,758 INFO L274 CegarLoopResult]: For program point L590(line 590) no Hoare annotation was computed. [2020-10-23 18:31:28,758 INFO L270 CegarLoopResult]: At program point L585-2(lines 585 595) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 0)) (.cse4 (<= ~a16~0 4)) (.cse1 (= ~a7~0 1)) (.cse2 (<= ~a16~0 5)) (.cse6 (= ~a20~0 1)) (.cse5 (<= ~a8~0 13)) (.cse0 (= ~a21~0 1))) (or (and .cse0 .cse1 .cse2 .cse3) (not (<= 5 |old(~a16~0)|)) (not (= |old(~a17~0)| 1)) (and .cse0 .cse4 .cse5) (not (<= |old(~a16~0)| 5)) (and .cse1 .cse3 .cse6 .cse5) (and .cse1 .cse4 .cse5) (and .cse1 .cse2 .cse6 (= ~a17~0 1) .cse5) (not (= |old(~a20~0)| 1)) (and .cse0 (= ~a7~0 0)) (not (= |old(~a21~0)| 1)) (not (= |old(~a7~0)| 0)))) [2020-10-23 18:31:28,758 INFO L274 CegarLoopResult]: For program point L585-3(lines 579 596) no Hoare annotation was computed. [2020-10-23 18:31:28,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:31:28 BoogieIcfgContainer [2020-10-23 18:31:28,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:31:28,785 INFO L168 Benchmark]: Toolchain (without parser) took 36046.70 ms. Allocated memory was 151.0 MB in the beginning and 620.8 MB in the end (delta: 469.8 MB). Free memory was 124.0 MB in the beginning and 307.0 MB in the end (delta: -183.0 MB). Peak memory consumption was 319.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:31:28,786 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:31:28,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 823.76 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 129.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:31:28,790 INFO L168 Benchmark]: Boogie Preprocessor took 156.49 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 123.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-23 18:31:28,791 INFO L168 Benchmark]: RCFGBuilder took 1319.33 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 103.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:31:28,791 INFO L168 Benchmark]: TraceAbstraction took 33729.99 ms. Allocated memory was 151.0 MB in the beginning and 620.8 MB in the end (delta: 469.8 MB). Free memory was 103.0 MB in the beginning and 307.0 MB in the end (delta: -204.0 MB). Peak memory consumption was 296.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:31:28,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 823.76 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 129.1 MB in the end (delta: -5.9 MB). Peak memory consumption was 27.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 156.49 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 123.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1319.33 ms. Allocated memory is still 151.0 MB. Free memory was 123.9 MB in the beginning and 103.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 80.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 33729.99 ms. Allocated memory was 151.0 MB in the beginning and 620.8 MB in the end (delta: 469.8 MB). Free memory was 103.0 MB in the beginning and 307.0 MB in the end (delta: -204.0 MB). Peak memory consumption was 296.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: (((((((((((((a21 == 1 && a7 == 1) && a16 <= 5) && a17 <= 0) || !(5 <= \old(a16))) || !(\old(a17) == 1)) || ((a21 == 1 && a16 <= 4) && a8 <= 13)) || !(\old(a16) <= 5)) || (((a7 == 1 && a17 <= 0) && a20 == 1) && a8 <= 13)) || ((a7 == 1 && a16 <= 4) && a8 <= 13)) || ((((a7 == 1 && a16 <= 5) && a20 == 1) && a17 == 1) && a8 <= 13)) || !(\old(a20) == 1)) || (a21 == 1 && a7 == 0)) || !(\old(a21) == 1)) || !(\old(a7) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.5s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 22.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 386 SDtfs, 5619 SDslu, 505 SDs, 0 SdLazy, 9341 SolverSat, 1987 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 927 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5279occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 1133 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 393 PreInvPairs, 527 NumberOfFragments, 637 HoareAnnotationTreeSize, 393 FomulaSimplifications, 97686 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 7424 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1893 NumberOfCodeBlocks, 1893 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1881 ConstructedInterpolants, 0 QuantifiedInterpolants, 649280 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2977 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 1290/1406 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...