/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:30:34,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:30:34,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:30:34,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:30:34,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:30:34,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:30:34,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:30:34,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:30:34,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:30:34,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:30:34,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:30:34,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:30:34,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:30:34,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:30:34,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:30:34,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:30:34,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:30:34,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:30:34,590 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:30:34,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:30:34,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:30:34,595 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:30:34,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:30:34,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:30:34,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:30:34,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:30:34,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:30:34,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:30:34,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:30:34,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:30:34,598 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:30:34,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:30:34,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:30:34,599 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:30:34,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:30:34,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:30:34,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:30:34,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:30:34,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:30:34,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:30:34,601 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:30:35,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:30:35,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:30:35,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:30:35,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:30:35,075 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:30:35,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2021-02-24 00:30:35,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744cb9b92/1a55749e720642ada8cdbb62160da682/FLAGb5bad0e62 [2021-02-24 00:30:35,874 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:30:35,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2021-02-24 00:30:35,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744cb9b92/1a55749e720642ada8cdbb62160da682/FLAGb5bad0e62 [2021-02-24 00:30:36,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/744cb9b92/1a55749e720642ada8cdbb62160da682 [2021-02-24 00:30:36,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:30:36,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:30:36,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:36,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:30:36,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:30:36,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749e6c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36, skipping insertion in model container [2021-02-24 00:30:36,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:30:36,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:30:36,474 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c[403,416] [2021-02-24 00:30:36,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:36,513 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:30:36,533 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt3.c[403,416] [2021-02-24 00:30:36,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:30:36,583 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:30:36,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36 WrapperNode [2021-02-24 00:30:36,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:30:36,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:30:36,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:30:36,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:30:36,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (1/1) ... [2021-02-24 00:30:36,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:30:36,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:30:36,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:30:36,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:30:36,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (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 [2021-02-24 00:30:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:30:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:30:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:30:36,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:30:36,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:30:36,794 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:30:36,794 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:30:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:30:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:30:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:30:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:30:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:30:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-24 00:30:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:30:36,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:30:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:30:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:30:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:30:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:30:36,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:30:37,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:30:37,203 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:30:37,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:37 BoogieIcfgContainer [2021-02-24 00:30:37,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:30:37,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:30:37,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:30:37,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:30:37,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:30:36" (1/3) ... [2021-02-24 00:30:37,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c390084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:37, skipping insertion in model container [2021-02-24 00:30:37,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:30:36" (2/3) ... [2021-02-24 00:30:37,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c390084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:30:37, skipping insertion in model container [2021-02-24 00:30:37,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:30:37" (3/3) ... [2021-02-24 00:30:37,216 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt3.c [2021-02-24 00:30:37,224 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:30:37,230 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:30:37,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:30:37,311 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:30:37,311 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:30:37,312 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:30:37,312 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:30:37,312 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:30:37,312 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:30:37,312 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:30:37,313 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:30:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2021-02-24 00:30:37,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-24 00:30:37,340 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:37,341 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] [2021-02-24 00:30:37,342 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:37,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:37,350 INFO L82 PathProgramCache]: Analyzing trace with hash 264394004, now seen corresponding path program 1 times [2021-02-24 00:30:37,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:37,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548677146] [2021-02-24 00:30:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:37,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:37,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:37,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 00:30:37,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:30:37,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 00:30:37,871 WARN L141 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size [2021-02-24 00:30:37,874 WARN L147 QuantifierPusher]: treesize reduction 22, result has 70.3 percent of original size 52 [2021-02-24 00:30:37,951 WARN L141 QuantifierPusher]: treesize reduction 23, result has 80.7 percent of original size [2021-02-24 00:30:37,955 WARN L147 QuantifierPusher]: treesize reduction 23, result has 80.7 percent of original size 96 [2021-02-24 00:30:37,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:37,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:38,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:38,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:38,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:38,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:38,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548677146] [2021-02-24 00:30:38,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:30:38,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 00:30:38,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205930595] [2021-02-24 00:30:38,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:30:38,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:30:38,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:30:38,177 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 9 states. [2021-02-24 00:30:39,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:39,017 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2021-02-24 00:30:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 00:30:39,019 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2021-02-24 00:30:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:39,030 INFO L225 Difference]: With dead ends: 76 [2021-02-24 00:30:39,030 INFO L226 Difference]: Without dead ends: 40 [2021-02-24 00:30:39,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:30:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-02-24 00:30:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-02-24 00:30:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-24 00:30:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-02-24 00:30:39,097 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 30 [2021-02-24 00:30:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:39,098 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-02-24 00:30:39,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:30:39,098 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-02-24 00:30:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-24 00:30:39,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:39,100 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] [2021-02-24 00:30:39,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:30:39,101 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:39,103 INFO L82 PathProgramCache]: Analyzing trace with hash -902518074, now seen corresponding path program 1 times [2021-02-24 00:30:39,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:39,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869441425] [2021-02-24 00:30:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:39,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:39,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:39,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:39,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,344 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:39,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:39,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:39,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:30:39,427 WARN L141 QuantifierPusher]: treesize reduction 24, result has 83.4 percent of original size [2021-02-24 00:30:39,434 WARN L147 QuantifierPusher]: treesize reduction 24, result has 83.4 percent of original size 121 [2021-02-24 00:30:39,561 WARN L141 QuantifierPusher]: treesize reduction 24, result has 83.8 percent of original size [2021-02-24 00:30:39,568 WARN L147 QuantifierPusher]: treesize reduction 24, result has 83.8 percent of original size 124 [2021-02-24 00:30:39,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,643 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:39,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:39,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:39,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:39,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:39,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:39,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869441425] [2021-02-24 00:30:39,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:39,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:30:39,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535365337] [2021-02-24 00:30:39,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:30:39,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:39,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:30:39,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:30:39,736 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 13 states. [2021-02-24 00:30:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:40,443 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-02-24 00:30:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:30:40,443 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2021-02-24 00:30:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:40,445 INFO L225 Difference]: With dead ends: 52 [2021-02-24 00:30:40,445 INFO L226 Difference]: Without dead ends: 47 [2021-02-24 00:30:40,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2021-02-24 00:30:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-24 00:30:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2021-02-24 00:30:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-24 00:30:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2021-02-24 00:30:40,463 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 34 [2021-02-24 00:30:40,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:40,463 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2021-02-24 00:30:40,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:30:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2021-02-24 00:30:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:30:40,465 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:40,465 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:40,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:30:40,466 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:40,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:40,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1287596168, now seen corresponding path program 2 times [2021-02-24 00:30:40,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:40,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947362379] [2021-02-24 00:30:40,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:40,616 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 00:30:40,617 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 00:30:40,634 WARN L141 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-02-24 00:30:40,636 WARN L147 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size 9 [2021-02-24 00:30:40,643 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-24 00:30:40,644 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-24 00:30:40,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:40,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 00:30:40,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:40,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-02-24 00:30:40,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:40,714 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-02-24 00:30:40,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:40,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:40,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:40,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:40,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:40,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:40,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:40,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947362379] [2021-02-24 00:30:40,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:40,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-02-24 00:30:40,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016746794] [2021-02-24 00:30:40,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:30:40,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:40,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:30:40,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:30:40,823 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 9 states. [2021-02-24 00:30:41,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:41,213 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-02-24 00:30:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:30:41,214 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2021-02-24 00:30:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:41,215 INFO L225 Difference]: With dead ends: 56 [2021-02-24 00:30:41,216 INFO L226 Difference]: Without dead ends: 44 [2021-02-24 00:30:41,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:30:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-24 00:30:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-02-24 00:30:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-24 00:30:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-02-24 00:30:41,233 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 38 [2021-02-24 00:30:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:41,233 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-02-24 00:30:41,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:30:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-02-24 00:30:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 00:30:41,235 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:41,235 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:41,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:30:41,235 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1964808003, now seen corresponding path program 1 times [2021-02-24 00:30:41,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:41,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274158406] [2021-02-24 00:30:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:41,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:41,278 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-02-24 00:30:41,279 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size 19 [2021-02-24 00:30:41,295 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:41,296 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:41,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:41,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:41,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274158406] [2021-02-24 00:30:41,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:41,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-02-24 00:30:41,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145496905] [2021-02-24 00:30:41,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:30:41,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:41,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:30:41,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:30:41,335 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 5 states. [2021-02-24 00:30:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:41,524 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2021-02-24 00:30:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:30:41,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2021-02-24 00:30:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:41,527 INFO L225 Difference]: With dead ends: 58 [2021-02-24 00:30:41,527 INFO L226 Difference]: Without dead ends: 46 [2021-02-24 00:30:41,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-24 00:30:41,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-02-24 00:30:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-24 00:30:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2021-02-24 00:30:41,545 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 39 [2021-02-24 00:30:41,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:41,545 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2021-02-24 00:30:41,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:30:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2021-02-24 00:30:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 00:30:41,546 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:41,547 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:41,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:30:41,547 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:41,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1631166749, now seen corresponding path program 1 times [2021-02-24 00:30:41,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:41,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445386010] [2021-02-24 00:30:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:41,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:41,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:41,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:41,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:41,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:41,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:41,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:30:41,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,726 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:30:41,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:30:41,784 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size [2021-02-24 00:30:41,788 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 145 [2021-02-24 00:30:41,891 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size [2021-02-24 00:30:41,898 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size 149 [2021-02-24 00:30:41,977 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:41,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:41,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:42,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:42,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:42,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:42,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:42,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:42,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:42,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445386010] [2021-02-24 00:30:42,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:42,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:30:42,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292747546] [2021-02-24 00:30:42,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:30:42,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:42,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:30:42,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:30:42,075 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 15 states. [2021-02-24 00:30:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:42,865 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-02-24 00:30:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 00:30:42,866 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2021-02-24 00:30:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:42,867 INFO L225 Difference]: With dead ends: 57 [2021-02-24 00:30:42,867 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 00:30:42,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:30:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 00:30:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2021-02-24 00:30:42,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-02-24 00:30:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-02-24 00:30:42,886 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 39 [2021-02-24 00:30:42,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:42,887 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-02-24 00:30:42,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:30:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-02-24 00:30:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-24 00:30:42,888 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:42,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-02-24 00:30:42,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 00:30:42,888 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:42,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1213937073, now seen corresponding path program 2 times [2021-02-24 00:30:42,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:42,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749625050] [2021-02-24 00:30:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:42,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:42,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:42,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:42,954 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:30:42,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:42,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:42,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:42,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 00:30:42,979 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size [2021-02-24 00:30:42,981 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.1 percent of original size 111 [2021-02-24 00:30:43,013 WARN L141 QuantifierPusher]: treesize reduction 7, result has 92.9 percent of original size [2021-02-24 00:30:43,015 WARN L147 QuantifierPusher]: treesize reduction 7, result has 92.9 percent of original size 92 [2021-02-24 00:30:43,045 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:43,046 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:43,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,047 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:43,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:43,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:43,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749625050] [2021-02-24 00:30:43,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:43,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-02-24 00:30:43,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703738597] [2021-02-24 00:30:43,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 00:30:43,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 00:30:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:30:43,100 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 7 states. [2021-02-24 00:30:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:43,617 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-02-24 00:30:43,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-24 00:30:43,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2021-02-24 00:30:43,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:43,619 INFO L225 Difference]: With dead ends: 65 [2021-02-24 00:30:43,619 INFO L226 Difference]: Without dead ends: 53 [2021-02-24 00:30:43,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-24 00:30:43,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-02-24 00:30:43,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2021-02-24 00:30:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-24 00:30:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2021-02-24 00:30:43,639 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 43 [2021-02-24 00:30:43,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:43,640 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2021-02-24 00:30:43,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 00:30:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2021-02-24 00:30:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-24 00:30:43,641 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:43,641 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:30:43,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 00:30:43,642 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:43,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:43,642 INFO L82 PathProgramCache]: Analyzing trace with hash 318623942, now seen corresponding path program 1 times [2021-02-24 00:30:43,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:43,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978517304] [2021-02-24 00:30:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:43,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:43,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:43,720 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:43,727 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,728 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:43,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:43,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:43,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:30:43,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 00:30:43,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:30:43,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-24 00:30:43,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:43,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-24 00:30:43,899 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size [2021-02-24 00:30:43,901 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 146 [2021-02-24 00:30:43,996 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size [2021-02-24 00:30:43,999 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size 150 [2021-02-24 00:30:44,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:44,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:44,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:44,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:44,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:44,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:44,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978517304] [2021-02-24 00:30:44,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:44,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-02-24 00:30:44,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343243778] [2021-02-24 00:30:44,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-24 00:30:44,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:44,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-24 00:30:44,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:30:44,172 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 17 states. [2021-02-24 00:30:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:45,142 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2021-02-24 00:30:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:30:45,143 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2021-02-24 00:30:45,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:45,144 INFO L225 Difference]: With dead ends: 68 [2021-02-24 00:30:45,144 INFO L226 Difference]: Without dead ends: 62 [2021-02-24 00:30:45,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=715, Unknown=0, NotChecked=0, Total=870 [2021-02-24 00:30:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-24 00:30:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2021-02-24 00:30:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-24 00:30:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-02-24 00:30:45,169 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 44 [2021-02-24 00:30:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:45,169 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-02-24 00:30:45,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-24 00:30:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-02-24 00:30:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:30:45,170 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:45,170 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-02-24 00:30:45,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-24 00:30:45,171 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:45,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:45,171 INFO L82 PathProgramCache]: Analyzing trace with hash -2029585032, now seen corresponding path program 2 times [2021-02-24 00:30:45,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:45,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234241956] [2021-02-24 00:30:45,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:45,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:45,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:45,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:45,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:45,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:45,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:30:45,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 00:30:45,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:30:45,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-24 00:30:45,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,384 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-24 00:30:45,412 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-24 00:30:45,413 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 34 [2021-02-24 00:30:45,451 WARN L141 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size [2021-02-24 00:30:45,452 WARN L147 QuantifierPusher]: treesize reduction 7, result has 84.1 percent of original size 37 [2021-02-24 00:30:45,483 WARN L141 QuantifierPusher]: treesize reduction 7, result has 85.4 percent of original size [2021-02-24 00:30:45,484 WARN L147 QuantifierPusher]: treesize reduction 7, result has 85.4 percent of original size 41 [2021-02-24 00:30:45,522 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size [2021-02-24 00:30:45,524 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size 146 [2021-02-24 00:30:45,634 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size [2021-02-24 00:30:45,638 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size 150 [2021-02-24 00:30:45,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:45,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:45,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:45,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:45,845 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:45,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234241956] [2021-02-24 00:30:45,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:45,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-02-24 00:30:45,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093931209] [2021-02-24 00:30:45,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-24 00:30:45,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:45,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-24 00:30:45,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-02-24 00:30:45,855 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 19 states. [2021-02-24 00:30:47,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:47,118 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2021-02-24 00:30:47,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 00:30:47,119 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2021-02-24 00:30:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:47,120 INFO L225 Difference]: With dead ends: 88 [2021-02-24 00:30:47,120 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 00:30:47,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2021-02-24 00:30:47,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 00:30:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2021-02-24 00:30:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-24 00:30:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-02-24 00:30:47,145 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 48 [2021-02-24 00:30:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:47,146 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-02-24 00:30:47,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-24 00:30:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-02-24 00:30:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 00:30:47,147 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:47,147 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-02-24 00:30:47,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-24 00:30:47,148 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1147568426, now seen corresponding path program 3 times [2021-02-24 00:30:47,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:47,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98267041] [2021-02-24 00:30:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:47,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:47,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 00:30:47,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:47,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:30:47,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-24 00:30:47,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 00:30:47,363 WARN L141 QuantifierPusher]: treesize reduction 1, result has 99.4 percent of original size [2021-02-24 00:30:47,364 WARN L147 QuantifierPusher]: treesize reduction 1, result has 99.4 percent of original size 163 [2021-02-24 00:30:47,427 WARN L141 QuantifierPusher]: treesize reduction 7, result has 95.1 percent of original size [2021-02-24 00:30:47,429 WARN L147 QuantifierPusher]: treesize reduction 7, result has 95.1 percent of original size 137 [2021-02-24 00:30:47,538 WARN L141 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-02-24 00:30:47,539 WARN L147 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size 1 [2021-02-24 00:30:47,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:47,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:47,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:47,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:47,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:30:47,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98267041] [2021-02-24 00:30:47,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:47,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:30:47,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611706352] [2021-02-24 00:30:47,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:30:47,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:47,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:30:47,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:30:47,603 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 11 states. [2021-02-24 00:30:48,286 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-02-24 00:30:48,864 WARN L202 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-02-24 00:30:49,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:49,557 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2021-02-24 00:30:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-24 00:30:49,558 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2021-02-24 00:30:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:49,560 INFO L225 Difference]: With dead ends: 99 [2021-02-24 00:30:49,560 INFO L226 Difference]: Without dead ends: 87 [2021-02-24 00:30:49,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-02-24 00:30:49,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-02-24 00:30:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-02-24 00:30:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-24 00:30:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2021-02-24 00:30:49,602 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 52 [2021-02-24 00:30:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:49,602 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2021-02-24 00:30:49,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:30:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2021-02-24 00:30:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 00:30:49,603 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:30:49,604 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2021-02-24 00:30:49,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-24 00:30:49,604 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:30:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:30:49,605 INFO L82 PathProgramCache]: Analyzing trace with hash 510850379, now seen corresponding path program 4 times [2021-02-24 00:30:49,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:30:49,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293296824] [2021-02-24 00:30:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:30:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:49,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:49,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:30:49,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:30:49,715 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 00:30:49,724 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:49,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 00:30:49,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:49,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-24 00:30:49,786 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-24 00:30:49,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:30:49,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:49,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:30:49,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-24 00:30:49,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:30:49,846 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size [2021-02-24 00:30:49,849 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.2 percent of original size 138 [2021-02-24 00:30:49,879 WARN L141 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size [2021-02-24 00:30:49,886 WARN L147 QuantifierPusher]: treesize reduction 4, result has 97.4 percent of original size 148 [2021-02-24 00:30:49,918 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:49,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:30:49,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:49,945 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:30:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:30:50,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:30:50,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:30:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-24 00:30:50,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293296824] [2021-02-24 00:30:50,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:30:50,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-02-24 00:30:50,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724813991] [2021-02-24 00:30:50,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-24 00:30:50,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:30:50,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-24 00:30:50,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:30:50,030 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 15 states. [2021-02-24 00:30:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:30:50,785 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2021-02-24 00:30:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 00:30:50,785 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2021-02-24 00:30:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:30:50,785 INFO L225 Difference]: With dead ends: 82 [2021-02-24 00:30:50,785 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:30:50,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-02-24 00:30:50,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:30:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:30:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:30:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:30:50,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-02-24 00:30:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:30:50,788 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:30:50,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-24 00:30:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:30:50,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:30:50,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-24 00:30:50,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:30:52,043 WARN L202 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 43 [2021-02-24 00:30:52,535 WARN L202 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 43 [2021-02-24 00:30:52,697 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2021-02-24 00:30:52,812 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 21 [2021-02-24 00:30:53,472 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 43 [2021-02-24 00:30:53,598 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 00:30:53,598 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 00:30:53,598 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 00:30:53,599 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 00:30:53,599 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 00:30:53,599 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:30:53,599 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 00:30:53,599 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:30:53,599 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-24 00:30:53,600 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:30:53,600 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 00:30:53,600 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 00:30:53,600 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 00:30:53,600 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:30:53,600 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:30:53,600 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2021-02-24 00:30:53,600 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:30:53,601 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:30:53,601 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:30:53,601 INFO L189 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-02-24 00:30:53,601 INFO L189 CegarLoopUtils]: For program point L6-1(line 6) no Hoare annotation was computed. [2021-02-24 00:30:53,601 INFO L189 CegarLoopUtils]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:30:53,601 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-02-24 00:30:53,601 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse1 (* 4294967296 (div main_~n~0 4294967296)))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ .cse1 20000001)) (<= (let ((.cse4 (div main_~l~0 4294967296))) (let ((.cse3 (* .cse4 (- 4294967296)))) (let ((.cse2 (div (+ main_~l~0 .cse3) 3))) (+ (* 25769803776 .cse2) (* 36893488151714070528 (div (+ (* .cse2 (- 3)) main_~l~0 .cse3) 4294967296)) main_~n~0 (* 36893488151714070528 .cse4) 8569934592)))) (+ .cse1 (* 8589934593 main_~l~0))))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,602 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse1 (* 4294967296 (div main_~n~0 4294967296)))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ .cse1 20000001)) (<= (let ((.cse4 (div main_~l~0 4294967296))) (let ((.cse3 (* .cse4 (- 4294967296)))) (let ((.cse2 (div (+ main_~l~0 .cse3) 3))) (+ (* 25769803776 .cse2) (* 36893488151714070528 (div (+ (* .cse2 (- 3)) main_~l~0 .cse3) 4294967296)) main_~n~0 (* 36893488151714070528 .cse4) 8569934592)))) (+ .cse1 (* 8589934593 main_~l~0))))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,602 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,602 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 16 36) the Hoare annotation is: true [2021-02-24 00:30:53,602 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,603 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and (= main_~i~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) [2021-02-24 00:30:53,603 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,603 INFO L192 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: true [2021-02-24 00:30:53,603 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-24 00:30:53,603 INFO L192 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: true [2021-02-24 00:30:53,603 INFO L192 CegarLoopUtils]: At program point L17-2(line 17) the Hoare annotation is: true [2021-02-24 00:30:53,603 INFO L192 CegarLoopUtils]: At program point L17-3(line 17) the Hoare annotation is: true [2021-02-24 00:30:53,604 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 16 36) the Hoare annotation is: true [2021-02-24 00:30:53,604 INFO L192 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: true [2021-02-24 00:30:53,604 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 16 36) the Hoare annotation is: true [2021-02-24 00:30:53,604 INFO L185 CegarLoopUtils]: At program point L28(lines 28 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse1 (* 4294967296 (div main_~n~0 4294967296)))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ .cse1 20000001)) (<= (let ((.cse4 (div main_~l~0 4294967296))) (let ((.cse3 (* .cse4 (- 4294967296)))) (let ((.cse2 (div (+ main_~l~0 .cse3) 3))) (+ (* 25769803776 .cse2) (* 36893488151714070528 (div (+ (* .cse2 (- 3)) main_~l~0 .cse3) 4294967296)) main_~n~0 (* 36893488151714070528 .cse4) 8569934592)))) (+ .cse1 (* 8589934593 main_~l~0))))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,604 INFO L185 CegarLoopUtils]: At program point L26(lines 26 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,604 INFO L185 CegarLoopUtils]: At program point L28-2(lines 26 31) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0)) (.cse0 (+ main_~l~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,605 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (or (and (= main_~i~0 0) (= main_~j~0 0) (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,605 INFO L185 CegarLoopUtils]: At program point L24-2(lines 24 33) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,605 INFO L185 CegarLoopUtils]: At program point L24-3(lines 24 33) the Hoare annotation is: (let ((.cse6 (div main_~l~0 4294967296)) (.cse5 (div (+ main_~i~0 main_~j~0 main_~k~0) 4294967296))) (let ((.cse4 (+ main_~l~0 (* 4294967296 .cse5))) (.cse3 (* 4294967296 .cse6))) (let ((.cse0 (< .cse4 (+ main_~i~0 main_~j~0 main_~k~0 .cse3 1))) (.cse1 (< .cse5 (+ .cse6 1))) (.cse2 (<= (+ main_~i~0 main_~j~0 main_~k~0 .cse3) .cse4))) (or (and .cse0 .cse1 (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001)) .cse2) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0)) (and .cse0 (= main_~k~0 0) (= main_~j~0 0) .cse1 .cse2))))) [2021-02-24 00:30:53,605 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (not (<= ~SIZE~0 20000001)) (and (= main_~l~0 0) (<= main_~n~0 (+ (* 4294967296 (div main_~n~0 4294967296)) 20000001))) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,605 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,605 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (= main_~l~0 0) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2021-02-24 00:30:53,606 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2021-02-24 00:30:53,606 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:30:53,606 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:30:53,606 INFO L185 CegarLoopUtils]: At program point L9(lines 9 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:30:53,606 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:30:53,606 INFO L185 CegarLoopUtils]: At program point L9-2(lines 8 13) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:30:53,606 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:30:53,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:30:53 BoogieIcfgContainer [2021-02-24 00:30:53,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:30:53,628 INFO L168 Benchmark]: Toolchain (without parser) took 17366.43 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 127.0 MB in the beginning and 225.5 MB in the end (delta: -98.5 MB). Peak memory consumption was 184.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:53,629 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:30:53,629 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:53,629 INFO L168 Benchmark]: Boogie Preprocessor took 72.18 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:53,630 INFO L168 Benchmark]: RCFGBuilder took 543.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 98.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:53,630 INFO L168 Benchmark]: TraceAbstraction took 16419.76 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 97.9 MB in the beginning and 225.5 MB in the end (delta: -127.6 MB). Peak memory consumption was 155.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:30:53,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 300.21 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.18 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 543.84 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 98.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16419.76 ms. Allocated memory was 151.0 MB in the beginning and 323.0 MB in the end (delta: 172.0 MB). Free memory was 97.9 MB in the beginning and 225.5 MB in the end (delta: -127.6 MB). Peak memory consumption was 155.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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: 24]: Loop Invariant Derived loop invariant: (((l <= i + j + k && i + j + k <= l) && n <= 4294967296 * (n / 4294967296) + 20000001) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.4s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 311 SDtfs, 753 SDslu, 876 SDs, 0 SdLazy, 1890 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 34 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 46 LocationsWithAnnotation, 130 PreInvPairs, 220 NumberOfFragments, 757 HoareAnnotationTreeSize, 130 FomulaSimplifications, 110217 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 46 FomulaSimplificationsInter, 14834 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 420 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 410 ConstructedInterpolants, 0 QuantifiedInterpolants, 174587 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 31/146 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...