/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 18:00:06,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 18:00:06,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 18:00:06,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 18:00:06,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 18:00:06,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 18:00:06,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 18:00:06,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 18:00:06,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 18:00:06,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 18:00:06,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 18:00:06,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 18:00:06,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 18:00:06,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 18:00:06,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 18:00:06,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 18:00:06,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 18:00:06,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 18:00:06,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 18:00:06,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 18:00:06,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 18:00:06,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 18:00:06,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 18:00:06,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 18:00:06,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 18:00:07,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 18:00:07,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 18:00:07,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 18:00:07,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 18:00:07,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 18:00:07,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 18:00:07,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 18:00:07,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 18:00:07,033 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 18:00:07,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 18:00:07,033 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 18:00:07,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 18:00:07,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 18:00:07,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 18:00:07,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 18:00:07,034 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 18:00:07,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 18:00:07,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 18:00:07,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 18:00:07,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 18:00:07,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 18:00:07,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 18:00:07,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 18:00:07,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 18:00:07,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 18:00:07,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 18:00:07,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 18:00:07,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 18:00:07,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 18:00:07,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 18:00:07,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 18:00:07,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 18:00:07,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 18:00:07,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 18:00:07,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 18:00:07,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 18:00:07,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 18:00:07,451 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 18:00:07,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2021-02-19 18:00:07,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f01a92b48/cda3129d16bb4f5289517a820ac1c2a9/FLAGc367f0d4c [2021-02-19 18:00:08,238 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 18:00:08,239 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2021-02-19 18:00:08,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f01a92b48/cda3129d16bb4f5289517a820ac1c2a9/FLAGc367f0d4c [2021-02-19 18:00:08,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f01a92b48/cda3129d16bb4f5289517a820ac1c2a9 [2021-02-19 18:00:08,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 18:00:08,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 18:00:08,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 18:00:08,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 18:00:08,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 18:00:08,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:00:08" (1/1) ... [2021-02-19 18:00:08,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cde0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:08, skipping insertion in model container [2021-02-19 18:00:08,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 06:00:08" (1/1) ... [2021-02-19 18:00:08,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 18:00:08,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 18:00:08,922 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906] [2021-02-19 18:00:08,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:00:08,956 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 18:00:08,972 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906] [2021-02-19 18:00:08,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 18:00:09,008 INFO L208 MainTranslator]: Completed translation [2021-02-19 18:00:09,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09 WrapperNode [2021-02-19 18:00:09,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 18:00:09,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 18:00:09,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 18:00:09,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 18:00:09,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... [2021-02-19 18:00:09,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... [2021-02-19 18:00:09,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... [2021-02-19 18:00:09,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... [2021-02-19 18:00:09,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... [2021-02-19 18:00:09,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... [2021-02-19 18:00:09,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... [2021-02-19 18:00:09,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 18:00:09,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 18:00:09,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 18:00:09,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 18:00:09,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 18:00:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 18:00:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 18:00:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 18:00:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 18:00:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 18:00:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 18:00:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 18:00:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 18:00:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 18:00:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 18:00:09,164 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 18:00:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 18:00:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 18:00:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 18:00:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 18:00:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 18:00:09,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 18:00:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 18:00:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 18:00:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 18:00:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 18:00:09,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 18:00:09,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 18:00:09,632 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-19 18:00:09,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:00:09 BoogieIcfgContainer [2021-02-19 18:00:09,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 18:00:09,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 18:00:09,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 18:00:09,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 18:00:09,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 06:00:08" (1/3) ... [2021-02-19 18:00:09,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1b31e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:00:09, skipping insertion in model container [2021-02-19 18:00:09,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 06:00:09" (2/3) ... [2021-02-19 18:00:09,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1b31e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 06:00:09, skipping insertion in model container [2021-02-19 18:00:09,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 06:00:09" (3/3) ... [2021-02-19 18:00:09,643 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2021-02-19 18:00:09,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 18:00:09,673 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 18:00:09,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 18:00:09,717 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 18:00:09,717 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 18:00:09,717 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 18:00:09,717 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 18:00:09,718 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 18:00:09,718 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 18:00:09,718 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 18:00:09,718 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 18:00:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-19 18:00:09,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-19 18:00:09,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:00:09,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:00:09,746 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:00:09,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:00:09,753 INFO L82 PathProgramCache]: Analyzing trace with hash -494472251, now seen corresponding path program 1 times [2021-02-19 18:00:09,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:00:09,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716547956] [2021-02-19 18:00:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:00:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:09,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:09,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:09,983 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:09,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 18:00:10,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:10,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:10,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:10,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:00:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:10,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:00:10,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716547956] [2021-02-19 18:00:10,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:00:10,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 18:00:10,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329272086] [2021-02-19 18:00:10,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 18:00:10,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:00:10,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 18:00:10,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-19 18:00:10,164 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2021-02-19 18:00:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:00:10,740 INFO L93 Difference]: Finished difference Result 112 states and 207 transitions. [2021-02-19 18:00:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 18:00:10,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-02-19 18:00:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:00:10,753 INFO L225 Difference]: With dead ends: 112 [2021-02-19 18:00:10,753 INFO L226 Difference]: Without dead ends: 64 [2021-02-19 18:00:10,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-19 18:00:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-19 18:00:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-02-19 18:00:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-19 18:00:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-02-19 18:00:10,822 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 17 [2021-02-19 18:00:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:00:10,823 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-02-19 18:00:10,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 18:00:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-02-19 18:00:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 18:00:10,825 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:00:10,826 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:00:10,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 18:00:10,826 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:00:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:00:10,828 INFO L82 PathProgramCache]: Analyzing trace with hash -730438524, now seen corresponding path program 1 times [2021-02-19 18:00:10,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:00:10,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170121481] [2021-02-19 18:00:10,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:00:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:10,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:10,920 WARN L141 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size [2021-02-19 18:00:10,921 WARN L147 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size 5 [2021-02-19 18:00:10,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 18:00:10,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:10,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:10,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:10,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:10,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:00:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-19 18:00:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 18:00:11,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170121481] [2021-02-19 18:00:11,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:00:11,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:00:11,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068412589] [2021-02-19 18:00:11,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:00:11,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:00:11,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:00:11,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:00:11,035 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand 7 states. [2021-02-19 18:00:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:00:11,493 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2021-02-19 18:00:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 18:00:11,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-02-19 18:00:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:00:11,506 INFO L225 Difference]: With dead ends: 63 [2021-02-19 18:00:11,506 INFO L226 Difference]: Without dead ends: 61 [2021-02-19 18:00:11,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:00:11,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-19 18:00:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-19 18:00:11,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-19 18:00:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2021-02-19 18:00:11,548 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 22 [2021-02-19 18:00:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:00:11,549 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2021-02-19 18:00:11,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 18:00:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2021-02-19 18:00:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-19 18:00:11,552 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:00:11,552 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:00:11,552 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 18:00:11,553 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:00:11,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:00:11,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1977228752, now seen corresponding path program 1 times [2021-02-19 18:00:11,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:00:11,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379180964] [2021-02-19 18:00:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:00:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,657 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-19 18:00:11,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:00:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-19 18:00:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 18:00:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-19 18:00:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,706 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 18:00:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-02-19 18:00:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-19 18:00:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:11,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:11,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-19 18:00:11,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379180964] [2021-02-19 18:00:11,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:00:11,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 18:00:11,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075731643] [2021-02-19 18:00:11,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 18:00:11,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:00:11,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 18:00:11,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 18:00:11,732 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand 4 states. [2021-02-19 18:00:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:00:11,935 INFO L93 Difference]: Finished difference Result 90 states and 123 transitions. [2021-02-19 18:00:11,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 18:00:11,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-02-19 18:00:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:00:11,938 INFO L225 Difference]: With dead ends: 90 [2021-02-19 18:00:11,938 INFO L226 Difference]: Without dead ends: 61 [2021-02-19 18:00:11,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 18:00:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-19 18:00:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-19 18:00:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-19 18:00:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2021-02-19 18:00:11,954 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 51 [2021-02-19 18:00:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:00:11,954 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2021-02-19 18:00:11,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 18:00:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2021-02-19 18:00:11,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-19 18:00:11,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:00:11,957 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:00:11,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 18:00:11,957 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:00:11,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:00:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1335676676, now seen corresponding path program 1 times [2021-02-19 18:00:11,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:00:11,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080759094] [2021-02-19 18:00:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:00:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,011 WARN L141 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-02-19 18:00:12,012 WARN L147 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size 3 [2021-02-19 18:00:12,017 WARN L141 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-02-19 18:00:12,018 WARN L147 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size 10 [2021-02-19 18:00:12,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:12,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,030 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:12,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:00:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-19 18:00:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,067 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,068 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 18:00:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-19 18:00:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 18:00:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-19 18:00:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-19 18:00:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-19 18:00:12,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080759094] [2021-02-19 18:00:12,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:00:12,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:00:12,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95165604] [2021-02-19 18:00:12,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:00:12,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:00:12,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:00:12,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:00:12,104 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand 7 states. [2021-02-19 18:00:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:00:12,423 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-02-19 18:00:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 18:00:12,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2021-02-19 18:00:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:00:12,425 INFO L225 Difference]: With dead ends: 68 [2021-02-19 18:00:12,425 INFO L226 Difference]: Without dead ends: 66 [2021-02-19 18:00:12,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:00:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-19 18:00:12,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-02-19 18:00:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-19 18:00:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2021-02-19 18:00:12,440 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 52 [2021-02-19 18:00:12,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:00:12,441 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2021-02-19 18:00:12,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 18:00:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2021-02-19 18:00:12,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-19 18:00:12,443 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:00:12,443 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:00:12,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 18:00:12,444 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:00:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:00:12,444 INFO L82 PathProgramCache]: Analyzing trace with hash -296574164, now seen corresponding path program 1 times [2021-02-19 18:00:12,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:00:12,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763886804] [2021-02-19 18:00:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:00:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 18:00:12,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-19 18:00:12,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:12,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:12,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:00:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,559 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-19 18:00:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 18:00:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-19 18:00:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 18:00:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-19 18:00:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-19 18:00:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-19 18:00:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-19 18:00:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-19 18:00:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,594 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-19 18:00:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-19 18:00:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-02-19 18:00:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-02-19 18:00:12,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763886804] [2021-02-19 18:00:12,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:00:12,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:00:12,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528910750] [2021-02-19 18:00:12,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:00:12,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:00:12,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:00:12,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:00:12,620 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand 7 states. [2021-02-19 18:00:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:00:12,929 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2021-02-19 18:00:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 18:00:12,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2021-02-19 18:00:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:00:12,931 INFO L225 Difference]: With dead ends: 74 [2021-02-19 18:00:12,931 INFO L226 Difference]: Without dead ends: 72 [2021-02-19 18:00:12,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:00:12,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-19 18:00:12,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-02-19 18:00:12,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-19 18:00:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2021-02-19 18:00:12,945 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 87 [2021-02-19 18:00:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:00:12,946 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2021-02-19 18:00:12,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 18:00:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2021-02-19 18:00:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-02-19 18:00:12,948 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 18:00:12,949 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 18:00:12,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 18:00:12,949 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 18:00:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 18:00:12,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1057322499, now seen corresponding path program 1 times [2021-02-19 18:00:12,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 18:00:12,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922893338] [2021-02-19 18:00:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 18:00:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:12,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:12,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,991 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 18:00:12,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 18:00:12,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:12,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:13,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 18:00:13,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 18:00:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-19 18:00:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-19 18:00:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,066 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-19 18:00:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-19 18:00:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,074 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-19 18:00:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-19 18:00:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-19 18:00:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-19 18:00:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-19 18:00:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-19 18:00:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-19 18:00:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-02-19 18:00:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-02-19 18:00:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 18:00:13,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 18:00:13,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 18:00:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-02-19 18:00:13,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922893338] [2021-02-19 18:00:13,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 18:00:13,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 18:00:13,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620267455] [2021-02-19 18:00:13,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-19 18:00:13,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 18:00:13,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-19 18:00:13,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-19 18:00:13,125 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 7 states. [2021-02-19 18:00:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 18:00:13,449 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-02-19 18:00:13,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 18:00:13,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2021-02-19 18:00:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 18:00:13,451 INFO L225 Difference]: With dead ends: 75 [2021-02-19 18:00:13,451 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 18:00:13,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-02-19 18:00:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 18:00:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 18:00:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 18:00:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 18:00:13,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2021-02-19 18:00:13,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 18:00:13,453 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 18:00:13,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-19 18:00:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 18:00:13,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 18:00:13,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-19 18:00:13,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 18:00:13,789 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2021-02-19 18:00:14,342 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-19 18:00:14,342 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-19 18:00:14,342 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-19 18:00:14,342 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 18:00:14,343 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-19 18:00:14,343 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 18:00:14,343 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 18:00:14,343 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-19 18:00:14,343 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 18:00:14,343 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 24 83) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point L44(lines 44 80) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point L36(lines 25 83) no Hoare annotation was computed. [2021-02-19 18:00:14,344 INFO L189 CegarLoopUtils]: For program point L69-1(lines 69 75) no Hoare annotation was computed. [2021-02-19 18:00:14,345 INFO L189 CegarLoopUtils]: For program point L61(lines 61 79) no Hoare annotation was computed. [2021-02-19 18:00:14,345 INFO L185 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,345 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,345 INFO L185 CegarLoopUtils]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,345 INFO L189 CegarLoopUtils]: For program point L37(lines 25 83) no Hoare annotation was computed. [2021-02-19 18:00:14,345 INFO L189 CegarLoopUtils]: For program point L54(lines 44 80) no Hoare annotation was computed. [2021-02-19 18:00:14,345 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 24 83) no Hoare annotation was computed. [2021-02-19 18:00:14,345 INFO L185 CegarLoopUtils]: At program point L71(line 71) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,346 INFO L185 CegarLoopUtils]: At program point L71-1(line 71) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,346 INFO L185 CegarLoopUtils]: At program point L63(line 63) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,346 INFO L185 CegarLoopUtils]: At program point L63-1(line 63) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,346 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 83) the Hoare annotation is: true [2021-02-19 18:00:14,346 INFO L185 CegarLoopUtils]: At program point L47-1(lines 46 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,346 INFO L185 CegarLoopUtils]: At program point L47-2(lines 47 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,347 INFO L185 CegarLoopUtils]: At program point L72(line 72) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,347 INFO L185 CegarLoopUtils]: At program point L56(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,347 INFO L185 CegarLoopUtils]: At program point L56-1(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,347 INFO L192 CegarLoopUtils]: At program point L81(lines 25 83) the Hoare annotation is: true [2021-02-19 18:00:14,347 INFO L189 CegarLoopUtils]: For program point L48(line 48) no Hoare annotation was computed. [2021-02-19 18:00:14,347 INFO L185 CegarLoopUtils]: At program point L73(line 73) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,347 INFO L189 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed. [2021-02-19 18:00:14,348 INFO L185 CegarLoopUtils]: At program point L65-1(lines 64 77) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2) (and (= main_~c~0 0) .cse0 .cse1 .cse2))) [2021-02-19 18:00:14,348 INFO L189 CegarLoopUtils]: For program point L57(lines 44 80) no Hoare annotation was computed. [2021-02-19 18:00:14,348 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,348 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,348 INFO L189 CegarLoopUtils]: For program point L33(line 33) no Hoare annotation was computed. [2021-02-19 18:00:14,348 INFO L189 CegarLoopUtils]: For program point L50(line 50) no Hoare annotation was computed. [2021-02-19 18:00:14,348 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,349 INFO L185 CegarLoopUtils]: At program point L42-1(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-19 18:00:14,349 INFO L185 CegarLoopUtils]: At program point L67(line 67) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2021-02-19 18:00:14,349 INFO L189 CegarLoopUtils]: For program point L34(line 34) no Hoare annotation was computed. [2021-02-19 18:00:14,349 INFO L185 CegarLoopUtils]: At program point L67-1(line 67) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2021-02-19 18:00:14,349 INFO L189 CegarLoopUtils]: For program point L43(line 43) no Hoare annotation was computed. [2021-02-19 18:00:14,349 INFO L189 CegarLoopUtils]: For program point L68(line 68) no Hoare annotation was computed. [2021-02-19 18:00:14,349 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-02-19 18:00:14,350 INFO L189 CegarLoopUtils]: For program point L35-1(lines 25 83) no Hoare annotation was computed. [2021-02-19 18:00:14,350 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-02-19 18:00:14,350 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-19 18:00:14,350 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-02-19 18:00:14,350 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-19 18:00:14,350 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-19 18:00:14,350 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-19 18:00:14,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 06:00:14 BoogieIcfgContainer [2021-02-19 18:00:14,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 18:00:14,370 INFO L168 Benchmark]: Toolchain (without parser) took 5737.33 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 126.7 MB in the beginning and 166.1 MB in the end (delta: -39.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 8.0 GB. [2021-02-19 18:00:14,370 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 18:00:14,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 18:00:14,371 INFO L168 Benchmark]: Boogie Preprocessor took 64.70 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 18:00:14,372 INFO L168 Benchmark]: RCFGBuilder took 557.91 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 132.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-19 18:00:14,372 INFO L168 Benchmark]: TraceAbstraction took 4732.38 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 132.3 MB in the beginning and 166.1 MB in the end (delta: -33.8 MB). Peak memory consumption was 125.6 MB. Max. memory is 8.0 GB. [2021-02-19 18:00:14,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.70 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 113.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 557.91 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 132.8 MB in the end (delta: -19.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4732.38 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 132.3 MB in the beginning and 166.1 MB in the end (delta: -33.8 MB). Peak memory consumption was 125.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (0 < scheme + 1 && 1 <= cp) && cp < urilen - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((1 <= c && 0 < scheme + 1) && 1 <= cp) && cp < urilen) || (((c == 0 && 0 < scheme + 1) && 1 <= cp) && cp < urilen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 14, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 294 SDtfs, 277 SDslu, 334 SDs, 0 SdLazy, 1031 SolverSat, 319 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 76 PreInvPairs, 105 NumberOfFragments, 469 HoareAnnotationTreeSize, 76 FomulaSimplifications, 1072 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 747 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 37824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 772/772 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...